maths question pls help-fast and detailed?

If 15 pumps of similar capacity can fill a tank in 2 hours,find the time required by 6 such pumps to fill the tank.

2008-03-06T21:35:58Z

detailed answers as to why it is 5 hrs ,plsssss.

alpha2008-03-06T21:05:24Z

Favorite Answer

[5]
Total pumping hrs needed to fill the tank
=15*2=30
Therefore 6 pumps will fill it up in
30/6=5 hrs

Jestr Rulz2008-03-06T21:16:28Z

15 pumps at 2 hours each means it takes 30 hours to fill the tank. If you are only using 6 pumps, divide 30 by 6 and get 5 hours.

Maria M2008-03-06T21:13:34Z

2 x 2.5 = 5 hours is my guess