A tank is filled by two pipes in 9 hours and 12 hours respectively. If the first
Practice Questions
Q1
A tank is filled by two pipes in 9 hours and 12 hours respectively. If the first pipe is opened for 3 hours and then the second pipe is opened, how long will it take to fill the tank?
5 hours
6 hours
7 hours
8 hours
Questions & Step-by-Step Solutions
A tank is filled by two pipes in 9 hours and 12 hours respectively. If the first pipe is opened for 3 hours and then the second pipe is opened, how long will it take to fill the tank?
