- A24
- B16
- C18
- D20
Step-by-Step Solution
A:B efficiency = 2:1, so combined = 3 units/day and total work = units; A alone takes 36/2 = 18 days.
Answer: C) 18
A is twice as efficient as B, and together they finish a piece of work in 12 days. In how many days would A alone finish the work?
Competition practiceTime & Work / Pipes
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Time & Work / Pipes practice questions
More Time & Work / Pipes practice
15 workers can build a wall in 8 days. How many workers are needed to build the same…A cistern on a terrace fills through one inlet in 45 minutes and through a second inlet…Normally a tap fills a tank in 14 hours, but because of a leak it now takes 18 hours.…Two pipes A and B can fill a tank in 10 hours and 15 hours respectively. Both are opened…Asha can whitewash a hall in 13 days and her brother can do it in 52 days. How many days…