Question 21
A pool can be filled through three pipes that can be used together or separately.
If only the first pipe is used, the pool is filled in 21 hours. If only the second pipe is used, the pool is filled in 24 hours. If all three pipes are used, the pool is filled in 8 hours.
How long will it take to fill the pool using only the third pipe?
If only the first pipe is used, the pool is filled in 21 hours. If only the second pipe is used, the pool is filled in 24 hours. If all three pipes are used, the pool is filled in 8 hours.
How long will it take to fill the pool using only the third pipe?