A) 12 min.
B) 15 min.
C) 25 min.
D) 50 min.
Correct Answer: A
Solution :
Required time to fill the tank \[=\frac{20\times 30}{20+30}\] \[=\frac{600}{50}\] \[=12\,\,\min \]You need to login to perform this action.
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