- A12 minutes
- B10 minutes
- C20 minutes
- D15 minutes
Step-by-Step Solution
Per minute: pipe , Mohan , leak . Net , so 15 minutes. (Ignoring the leak gives 12.)
Answer: D) 15 minutes
An empty tank is being filled by a pipe and by Mohan pouring buckets, while a leak at the bottom lets water out. The times shown are for each one working alone. If all three act together, how long will the tank take to fill?
Class 8Time and WorkDirect and Inverse Proportions
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Time and Work practice questions
More Class 8 Time and Work practice
Leena can type a thesis in 20 hours. Pinky types 25% faster. How long does Pinky take?A can do 1/3 of a job in 5 days and B can do 2/5 of it in 10 days. How long will they…A job takes A 30 days. A and B together do it in 20 days. What is the ratio of A's work…A can finish a work in 25 days and B in 20 days. They work together for 5 days, then A…A and B finish a job in 9 days. B and C finish it in 12 days. A and C finish it in 18…