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can any one interpret with explanation for me ?

Interesting Caselet!I think the highlight of the problem is " Nobody died"Which means Age bracket (>50 will always increase)And if you observe 2016 data of (>50 group) number is 29.And suddenly in the next year for the same (>50 group), there is jump of two people= 31This should have come from (41-50 group) who were exactly 50 yr old in year 2016 and became 51 year old in 2017.I guess that could be a starting point of interpretation.

Can you please find the value of y:24y/5+42=5y+35

y=35(24y+45*5)/5=5y+3524y+210=5(5y+35)24y+210=25y+175210-175=25y-24y35=y

in the 1st step why 5 was multiplied by 42. And if it is multiplied how can we multiply it again by 5y+35

how should i increase my score in LR???

Hai Srishti, Logical Reasoning is one of the important sections in CAT. It is clubbed with Data Interpretation. A total of 8sets or 32 questions will be tested in this section. Mostly questions will be coming from Arrangements, Games & Tournaments, Puzzles, Set Theory, Venn Diagrams, Network Diagrams, etc. First, you need to have a basic idea of all these areas and then you need to practise extensively. Along with them, you can practise Sudoku puzzles etc. Remember the key in this section is practice and getting exposed to wide variety of sets.

The ratio of the selling price of 3 articles A,B, and C is 8:9:5 and the ratio of percentage profit is 8:7:14 respectively. if the profit percent of A is 14.28% and the cost price of B is Rs.400, what is the overall percentage gain? plz suggest any shortcut method for this.

Given that the Selling Price(SP) of articles A, B and C are in the ratio 8 : 9 : 5. Let SP be 8q, 9q and 5q. ----------------> eq.1 Given, Profit percentage = 8 : 7 : 14. Let their profit percentage be 8p%, 7p% and 14p%. A's profit percent = 14.28% 8p% = 14. 28% p = 14.28/8 = 1.78. Then, B's profit percent = 7p% = 7 × 1.78 = 12.50% Profit Percentage of C = 14p = 14 × 1.78 = 25% But given that Cost Price of B = Rs. 400. SP of B = 400 + 12.50%(400) = Rs. 450. So, 9q = 450; q = 50. Selling Price of A = 8q = 8 × 50 = Rs. 400. SP of C = 5q = 5 × 50 = Rs. 250. Total SP = 450 + 400 + 250 = Rs. 1100. Let CP of A = a a = 400 – 14.28% of a; a = 400 – (14. 28a /100) 100a = 40000 – 14.28a => 114.28a = 40000 a = Rs. 350. Let CP of C = c c + 25% of c = 250 125c = 25000 c = Rs. 200. Total CP = 400 + 350 + 200 = Rs. 950. Profit = SP - CP = 1100 - 950= 150. Overall % Profit = (150 *100) /950 = 15.78% .

SP==8 9 5 P == 8 7 14 8 = 14.28% =1/7 7 = 12.5% = 1/8 14 = 25% = 1/4 SP -- 8 9 5 CP -- 7 8 4 8+9+5=22 7+8+4=19 (3/19)*100 = 15.78

The marked price of an article is increased by 25% and the selling price is increased by 16.66%,then the amount of profit doubles. If the original marked price be Rs.400 which is greater than the corresponding cost price by 33.33%, what is the increased selling price? a. 240 b. 360 c. 420 d. 600

I would say give away is "original marked price be Rs.400 which is greater than the corresponding cost price by 33.33% "Which Gives C.p. as 300.Now lets say Original S.P. is xNew S.P. will be (7/6)xTherefore,(7/6)x - 300 = 2[ x- 300]Solving for x,x=360New S.P =7/6x=420