CSATTime & WorkTime and Work2015

Two pipes A and B can independently fill a tank completely in 20 and 30 minutes respectively. If both the pipes are opened simultaneously, how much time will they take to fill the tank completely?

10 minutes

12 minutes

15 minutes

25 minutes

Correct Answer: Option B

Explanation

This is a straightforward 'Work and Time' problem, a common type in CSAT. First, let's use a quick logical check to narrow down the options. Pipe A can fill the tank in 20 m

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