- A30 hours
- B50 hours
- C40 hours
- D25 hours
Step-by-Step Solution
After 2 h: . The other two do in 10 h: an hour. Closed tap .
Answer: B) 50 hours
Three taps together fill a tank in 10 hours. After 2 hours one tap is closed, and the other two fill the rest in 10 more hours. How long would the closed tap take alone?
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