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1. |
A jug has two holes. The 1st hole alone makes the jug empty in 15 minutes and 2nd hole alone makes the jug empty in 20 minutes. If water leaks out at a constant rate, how long in minutes does it take if both the holes together empty the jug?A. 4/7B. \(7\frac{4}{7}\)C. \(8\frac{5}{7}\)D. \(8\frac{4}{7}\) |
A. | B |
B. | C |
C. | A |
D. | D |
Answer» E. | |