SOLUTION: If a vat of acid can be filled by an inlet pipe in 10 hours and emptied by an outlet pipe in 20 hours, how long will it take to fill the vat if both pipes are open?

Question 352105: If a vat of acid can be filled by an inlet pipe in 10 hours and emptied by an outlet pipe in 20 hours, how long will it take to fill the vat if both pipes are open?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Rate*Time=Output
.
.
.
Let the vat volume equal .
.
.
.
Fill rate:

.
.
Draining rate:

.
.
With both valves open,

Substitute from above,

hrs

RELATED QUESTIONS
A vat of chocolate can be filled by an inlet pipe in 12 hours. An outlet pipe can empty... (answered by ikleyn,ankor@dixie-net.com)

a water tank can be filled in 20 hours by an inlet pipe and emptied in 25 hours by an... (answered by stanbon)

A water tank can be filled in 20 hours by an inlet pipe and emptied in 24 hours by an... (answered by sudhanshu_kmr)

A water tank can be filled in 20 hours by an inlet pipe and emptied in 25 hours by an... (answered by Alan3354,ikleyn)

A WATEER TANK CAN BE FILLED IN 18 HOURS BY AN INLET PIPE AND EMPTIED IN 36 HOURS BY AN... (answered by ankor@dixie-net.com)

A water tank can be filled in 24 hours by an inlet pipe and emptied in 30 hours by an... (answered by addingup)

A vat of chocolate can be filled by an Intel pipe in 12 hours. An outlet pipe can empty... (answered by Boreal,ikleyn)

A cistern can be filled by an inlet pipe in 6 hours & emptied by an outlet pipe in 10... (answered by richwmiller)