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Two taps A and b can fill a tank in 10 m...

Two taps A and b can fill a tank in 10 minutes and 15 minutes respectively. In how many minutes will the tank be full if B was opened three minutes after A was opened ?

A

4.2

B

6.2

C

7.2

D

8.2

Text Solution

Verified by Experts

The correct Answer is:
C
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