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1. |
A man 2 m high, walks at a uniform speed of 6 m/min away from a lamp post, 5 m high. Find the rate at which the length of his shadow increases . |
A. | 4 m/min |
B. | 8 m/min |
C. | 9m/min |
D. | 14 m/min |
Answer» B. 8 m/min | |