Practicing Success
Practicing Success
CUET Preparation Today
Two pipes A and B can fill an empty tank in 30 minutes and 40 minutes respectively. Both pipes are opened together and after t minutes the pipe B is closed. If the tank gets completely filled in 21 minutes then t is equal to: |
12 11 9 18 |
12 |
The correct answer is Option (1) → 12 |
