- A12 h
- B9.8 h
- C14 h
- D16.8 h
Step-by-Step Solution
Let B give 5 units/h, A 7 units/h. Tank units. B alone: h. (12 h is A alone.)
Answer: D) 16.8 h
Pipe A delivers 40% more water per hour than pipe B. Together they fill a tank in 7 hours. How long would B take alone?
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