[ A can do 75% of a job in 9 days and B can do half of the job in 8 days.If they work on it together, then in how many days can they do half of the job? [ a) (40)/(7), b) (24)/(7), c) (7)/(2), d) (9)/(2)]]
1 day ago
A completes the work in 12 days, so A's 1 day's work = 1/12
Similarly, B completes the work in 16 days, so B's 1 day work = 1/16
(A + B) 's 1 day work = 1/12 + 1/16 = 7/48
So, together they will complete the work in 48/7 days
Time taken to complete half the work = 24/7 days
i want to start preparing chapters like time and work profit and loss etc.. i am very weak in this sections of Quant..
do you have any suggestions regarding this matter
Efficiency of Varun is 125 percent of the efficiency of tarun. Tarun starts the work and completes 32.5% of work alone 13 days, and rest with the help of Varun. In how many days will the whole work be completed?