If A had worked alone he would have taken 56 hours to do the task. What is B’s share, if A and B together on a task finishing it in 35 hours and they get paid Rs.4880 for it ?
Answer & explanation
Correct answer: option 2
A+B = 8R & A = 5R
B = 3R
total work = efficiency × number of hours
time taken by B = \(\frac{280R}{3R}\) = \(\frac{280}{3}\) hours
ratio of time taken A : B
56 : \(\frac{280}{3}\)
168 : 280
3 : 5
Efficiency 5 : 3
the ratio in which amount is paid is same as ratio of their work
8R = 4880
1R = 610
3R = 1830 is the share of B