

MCQOPTIONS
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1. |
A container has two holes. The 1st hole alone empties the container in 15 minutes and 2nd hole alone empties the container in 10 minutes. If water leaks out at a constant rate, how long (in minutes) does it take if both the holes together empty the container? |
A. | 6 |
B. | \(\frac{1}{6}\) |
C. | \(\frac{1}{7}\) |
D. | 7 |
Answer» B. \(\frac{1}{6}\) | |