Teaching DSSSB PRT 2023 Mock Test Quantitative Aptitude Time and Work Pipe and Cistern

A punctured tyre can deflate in 12 min. while a pumping machine takes 3 minutes to completely inflate a tyre. What will be the time taken to inflate the tyre when both the leak and pump are working together?

1

4 min

2

5 min

3

6 min

4

8 min

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