- A30 minutes
- B38 4/7 minutes
- C10 minutes
- D45 minutes
Step-by-Step Solution
Flow is proportional to diameter squared: 1 : 4 : 9. All three give 14 parts against the largest's 9: .
Answer: B) 38 4/7 minutes
Three pipes have diameters in the ratio 1 : 2 : 3, with water flowing at the same speed. The largest fills a tank in 1 hour. How many minutes do all three take together?
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