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A point source of light is hung 30 feet ...

A point source of light is hung 30 feet directly above a straight horizontal path on which a man of 6 feet in height is walking. How fast is the man's shadow lengthening and how fast the tip of shadow is moving when he is walking away from the light at the rate of 100 ft/min.

A

20 ft/min

B

25 ft/min

C

125 ft/min

D

80 ft/min

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Verified by Experts

The correct Answer is:
B
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