- A15 min
- B30 min
- C8 min
- D32 min
Step-by-Step Solution
B's rate = → 30 min. (8 min is 20 − 12, which is not how rates work.)
Answer: B) 30 min
Pipes A and B together fill a tank in 12 minutes. A alone takes 20 minutes. How long would B alone take?
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