- A7.2 min
- B6 min
- C30 min
- D36 min
Step-by-Step Solution
The inlet takes min. Net → 36 min. (7.2 min adds the two rates.)
Answer: D) 36 min
An outlet can empty a full tank in 18 minutes. An inlet, which works 50% faster than the outlet, is opened with it on the empty tank. How long until the tank is full?
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