Question

PLEASE HELP!!
Two pipes are filling a tank. The larger pipe can fill a tank three times as fast as the smaller pipe. With both pipes working, the tank can be filled in 84 minutes. How long would it take if only the smaller pipe was used?

Answer 1

Answer:

It would take the smaller pipe 28 minutes to fill up the truck.

Step-by-step explanation:

Since the larger pipe takes 84 minutes and is three times faster than the smaller pipe, you have to divide 84 by 3 to get 28. To check if this is correct you have to multiply 28 by 3 and you get 84. Showing that the larger pipe is three times faster.