A water pump takes 6 hours to fill an overhead tank. A standby pump takes 10 hours to fill the same tank. If the first pipe fails after 2 hours, then how long will the standby pump take to fill the rest?
A water pump takes 6 hours to fill an overhead tank. A standby pump takes 10 hours to fill the same tank. If the first pipe fails after 2 hours, then how long will the standby pump take to fill the rest?