- A4 h 48 min
- B5 h
- C4 h 30 min
- D4 h 40 min
Step-by-Step Solution
Every 2 . After 4 ; is left. In the 5th hour A needs min. Total 4 40 min.
Answer: D) 4 h 40 min
Opened alternately for one hour each, starting with A, pipes A (fills in 4 hours) and B (fills in 6 hours) work on an empty tank. How long does it take to fill?
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