Practice30Create account

Gopal can whitewash a school building in 16 days and Irfan in 48 days. They start together, but after 8 days Gopal leaves. How many more days does Irfan take to finish?

Competition practiceTime & Work / Pipes
  • A16
  • B12
  • C24
  • D8

Step-by-Step Solution

Together they do 1/16 + 1/48 = 4/48 = 1/12 per day, so 8 days give 8/12 = 2/3. The remaining 1/3 at Irfan's rate 1/48 takes days.
Answer: A) 16

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

Lata works three times as fast as Gita. Together they finish a sewing order in 15 days.…An inlet pipe can fill a cistern in 12 hours and an outlet can empty the full cistern in…Two carpenters, Salim and Joseph, can each make a set of wardrobes alone in 52 days and…Usha alone can bind a set of registers in 18 days and Faisal alone in 27 days. They work…18 labourers can lay a village road in 28 days. If 24 labourers are put on the job, all…