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1. Two identical taps fill 2/5 of a tank in 20 minutes.when one of the taps goes dry n how many minutes will the remaining one tap fill the rest of the tank?
- A. 5 min
- B. 5 min
- C. 5 min
- D. 5 min
Answer: Option C
Explanation:
2 taps can fill in 20 minutes = 2/5th
1 tap can fill in 20 minutes = 1/5th.
remaining portion to be filled up = 1 - 2/5 = 3/5.
1/5th can be filled by 1 tap in 20 mins
3/5th can be filled by 1 tap in 20x3 mins = 60 minutes. (ans)
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