A and B can finish a piece of work in 12 days and 15 days respectively. Together they start the work but after few days B left the job and A finished the remaining work in 3 days. If A and B get total Rs.6600 for the job, then find B’s share.
Answer & explanation
Correct answer: option 2
Total work = Efficiency × Number of days
work done by A in last 3 days when B left the work = 5R ×3 = 15R
remaining work = 60R - 15R = 45R
Time taken = \(\frac{45R}{9R}\) = 5 days
total work by A = 5R × 5 + 15R = 40R
total work by B = 20R
ratio of their work A : B
2 : 1
the ratio in which amount is paid is same as ratio of their work
3R = 6600
1R = 2200 is the share of B