Solve the problem.One pump can drain a pool in 11 minutes. When a second pump is also used, the pool only takes 9 minutes to drain. How long would it take the second pump to drain the pool if it were the only pump in use?
A. 49
minutes
B. 4
minutes
C. 97 minutes
D. 
minute
Answer: A
Mathematics
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A. 2.65 B. 27.5 C. 26.5 D. 0.038
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