railway RRB Technician Grade 1 Mock Test 2024 Quantitative Aptitude Time and Work Work Efficiency

A pump can fill a tank in 4 hours, but due to a leak, the tank now gets filled in 5 hours. How long will it take the leakage to empty the tank when it is full?

1

9 hours

2

4.5 hours

3

20 hours

4

1 hour

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