{"id":13002,"date":"2018-03-11T15:29:17","date_gmt":"2018-03-11T09:59:17","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=13002"},"modified":"2018-03-11T15:31:17","modified_gmt":"2018-03-11T10:01:17","slug":"time-work-problems-rrb-exam","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/time-work-problems-rrb-exam\/","title":{"rendered":"Time and Work Problems for RRB Exam"},"content":{"rendered":"

Time and Work Problems for RRB Exam – ALP & Railway group-d<\/p>\n

Download App to Access Questions Directly<\/a><\/p>\n

Get 40 Railway mocks for just Rs. 249<\/a><\/p>\n

Question 1:<\/strong><\/p>\n

Find the length of the train travelling with 90 kmph if it crossed a 600m bridge in 56 seconds ?<\/p>\n

a) 950 m
\nb) 900 m
\nc) 850 m
\nd) 800 m<\/p>\n

Answer: d<\/p>\n

Solution:<\/p>\n

Let x be the length of the train,
\nSpeed = 90 kmph = 90*(5\/18) = 25 m\/s
\nDistance = Speed*time
\nx+600 = 25*(56) = 1400
\nx = 1400 – 600 = 800m
\nSo the answer is option D.<\/p>\n

Question 2:\u00a0<\/strong><\/p>\n

Find the distance covered by a boat in 30 mins during downstream, if its speed in still water is 7 kmph and speed of the stream is 5 kmph ?<\/p>\n

a) 6 km
\nb) 7 km
\nc) 8 km
\nd) 9 km<\/p>\n

Answer: a<\/p>\n

RRB Group D previous year papers<\/a><\/p>\n

RRB ALP Free Mock Test<\/a><\/p>\n

Solution:<\/strong><\/p>\n

Relative speed during downstream = 7+5 = 12 kmph
\nTime = 30 mins = 1\/2 hr = 0.5 hrs Distance = Speed*Time = 12*0.5 = 6 km
\nSo the answer is option A.<\/p>\n

Question 3:<\/strong><\/p>\n

3 men and 2 women can complete a work in 12 days, then in how many days can 6 men and 4 women complete the work ?<\/p>\n

a) 4
\nb) 5
\nc) 6
\nd) 8<\/p>\n

Answer: c<\/p>\n

Solution:<\/strong><\/p>\n

3 men and 2 women can complete a work in 12 days
\nIf persons are doubled, Days will be halved
\nHence 6 men and 4 women can complete the work in 12\/2 = 6 days
\nSo the answer is option C.<\/p>\n

Question 4:<\/strong><\/p>\n

Find the speed of a train of length 600m, which crossed a man standing on the platform in 24 seconds ?<\/p>\n

a) 40 kmph
\nb) 80 kmph
\nc) 45 kmph
\nd) 90 kmph<\/p>\n

Answer: d<\/p>\n

Solution:<\/strong><\/p>\n

Speed = distance\/time = 600\/24 = 25 m\/s = 25*(18\/5) = 5*18 = 90 kmph
\nSo the answer is option D.<\/p>\n

Railway Group D Free Online Test 2018<\/a><\/p>\n

Question 5:<\/strong><\/p>\n

Find the speed of a car which travelled 100 metres in 4.5 seconds ?<\/p>\n

a) 60 kmph
\nb) 80 kmph
\nc) 100 kmph
\nd) 120 kmph<\/p>\n

Answer: b<\/p>\n

Solution:<\/strong><\/p>\n

Speed = distance\/time = 100\/4.5 m\/s = (100\/4.5)*(18\/5) kmph = 20*4 = 80 kmph
\nSo the answer is option B.<\/p>\n

Question 6:<\/strong><\/p>\n

 <\/p>\n

Find the distance covered by a boat in 30 mins during downstream, if its speed in still water is 7 kmph and speed of the stream is 5 kmph ?<\/p>\n

a) 6 km
\nb) 7 km
\nc) 8 km
\nd) 9 km<\/p>\n

Answer: a<\/p>\n

Solution:<\/strong><\/p>\n

Relative speed during downstream = 7+5 = 12 kmph
\nTime = 30 mins = 1\/2 hr = 0.5 hrs
\nDistance = Speed*Time = 12*0.5 = 6 km
\nSo the answer is option A.<\/p>\n

General Science Tips for Railway Group-D and RRB ALP <\/a><\/p>\n

 <\/p>\n

How to prepare for RRB ALP Exam <\/a><\/p>\n

RRB Assistant Loco Pilot & Techinican Expected Cutoff 2018\u00a0<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Time and Work Problems for RRB Exam – ALP & Railway group-d Question 1: Find the length of the train travelling with 90 kmph if it crossed a 600m bridge in 56 seconds ? a) 950 m b) 900 m c) 850 m d) 800 m Answer: d Solution: Let x be the length of […]<\/p>\n","protected":false},"author":22,"featured_media":13012,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[169,125,31],"tags":[490,166],"class_list":{"0":"post-13002","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-downloads","8":"category-featured","9":"category-railways","10":"tag-railway-group-d","11":"tag-railways"},"better_featured_image":{"id":13012,"alt_text":"time and work problems for rrb exam","caption":"time and work problems for rrb exam","description":"time and work problems for rrb exam","media_type":"image","media_details":{"width":"1200","height":"630","file":"2018\/03\/fig-11-03-2018_09-09-31.jpg","sizes":{"thumbnail":{"file":"fig-11-03-2018_09-09-31-150x150.jpg","width":"150","height":"150","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-150x150.jpg"},"medium":{"file":"fig-11-03-2018_09-09-31-300x158.jpg","width":"300","height":"158","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-300x158.jpg"},"medium_large":{"file":"fig-11-03-2018_09-09-31-768x403.jpg","width":"768","height":"403","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-768x403.jpg"},"large":{"file":"fig-11-03-2018_09-09-31-1024x538.jpg","width":"1024","height":"538","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-1024x538.jpg"},"tiny-lazy":{"file":"fig-11-03-2018_09-09-31-30x16.jpg","width":"30","height":"16","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-30x16.jpg"},"td_80x60":{"file":"fig-11-03-2018_09-09-31-80x60.jpg","width":"80","height":"60","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-80x60.jpg"},"td_100x70":{"file":"fig-11-03-2018_09-09-31-100x70.jpg","width":"100","height":"70","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-100x70.jpg"},"td_218x150":{"file":"fig-11-03-2018_09-09-31-218x150.jpg","width":"218","height":"150","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-218x150.jpg"},"td_265x198":{"file":"fig-11-03-2018_09-09-31-265x198.jpg","width":"265","height":"198","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-265x198.jpg"},"td_324x160":{"file":"fig-11-03-2018_09-09-31-324x160.jpg","width":"324","height":"160","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-324x160.jpg"},"td_324x235":{"file":"fig-11-03-2018_09-09-31-324x235.jpg","width":"324","height":"235","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-324x235.jpg"},"td_324x400":{"file":"fig-11-03-2018_09-09-31-324x400.jpg","width":"324","height":"400","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-324x400.jpg"},"td_356x220":{"file":"fig-11-03-2018_09-09-31-356x220.jpg","width":"356","height":"220","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-356x220.jpg"},"td_356x364":{"file":"fig-11-03-2018_09-09-31-356x364.jpg","width":"356","height":"364","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-356x364.jpg"},"td_533x261":{"file":"fig-11-03-2018_09-09-31-533x261.jpg","width":"533","height":"261","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-533x261.jpg"},"td_534x462":{"file":"fig-11-03-2018_09-09-31-534x462.jpg","width":"534","height":"462","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-534x462.jpg"},"td_696x0":{"file":"fig-11-03-2018_09-09-31-696x365.jpg","width":"696","height":"365","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-696x365.jpg"},"td_696x385":{"file":"fig-11-03-2018_09-09-31-696x385.jpg","width":"696","height":"385","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-696x385.jpg"},"td_741x486":{"file":"fig-11-03-2018_09-09-31-741x486.jpg","width":"741","height":"486","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-741x486.jpg"},"td_1068x580":{"file":"fig-11-03-2018_09-09-31-1068x580.jpg","width":"1068","height":"580","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-1068x580.jpg"},"td_1068x0":{"file":"fig-11-03-2018_09-09-31-1068x561.jpg","width":"1068","height":"561","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-1068x561.jpg"},"td_0x420":{"file":"fig-11-03-2018_09-09-31-800x420.jpg","width":"800","height":"420","mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31-800x420.jpg"}},"image_meta":{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}},"post":null,"source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2018\/03\/fig-11-03-2018_09-09-31.jpg"},"yoast_head":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\n\n\n