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1. Two identical tapes fill 2/5 of a tank in 20 minutes. When one of the taps goes dry in how many minutes will the remaining one tap fill the rest of the tank?
- A. 5 minutes
- B. 5 minutes
- C. 5 minutes
- D. 5 minutes
Answer: Option C
Explanation:
Each tap takes 2x20*5/2 = 100 minutes to fill the tank.
In the first 20 minutes, the taps filled 2/5th of the tank. The remaining 3/5th of the tank will take a single tap (3/2)*20*2 = 60 minutes.
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