A can do 40% of work in 12 days, whereas B can do 60% of the same work in 15 days. Both work together for 10 days. C completes the remaining work alone in 4 days. A, B and C together will complete 28% of the same work in ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option ie 4 ie 2 days.
A = 40% → 12 days → 30%
B = 60% → 15 days → 25%
30 × 5 = 150
25 × 6 = 150
(5 + 6) × 11 = 1100
(150 - 110) / 4 = 10 units per day
(28 × 1.5) / 21 = 2 days