A man who is 6 feet tall is standing under a streetlight and casts a shadow on the sidewalk. The man is standing 15 feet away from the 20-foot streetlight. How long is his shadow, s?

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asked Sep 10, 2021 117k views

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A man who is 6 feet tall is standing under a streetlight and casts a shadow on the sidewalk. The man is standing 15 feet away from the 20-foot streetlight. How long is his shadow, s?

Mathematics
middle-school

Moose asked

by Moose

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1 Answer

5 votes

Answer:

6 3/7 feet

Explanation:

$(20)/(6) =(x+15)/(x) \\20x=6x+90\\20x-6x=90\\14 x=90\\x=90/14=45/7=6~ 3/7 feet$

Mat Kelcey answered Sep 15, 2021

by Mat Kelcey

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