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Mathematics 7 Online
OpenStudy (anonymous):

A person 2.5 ft tall casts a shadow of 3 ft. How long is a shadow of a pole that is 6.7 ft tall?

OpenStudy (anonymous):

use ratio and proportion \[2.5 : 3 = 6.7 : x\] \[\implies 3 \times 6.7 = 2.5x\] do you get it?

OpenStudy (anonymous):

so the answer is 2.5x? because the options given are 5.5 ft. 7 ft. 8 ft.

OpenStudy (anonymous):

what is 3 * 6.7?

OpenStudy (anonymous):

(use a calculator)

OpenStudy (anonymous):

3 * 6.7 is 20.1

OpenStudy (anonymous):

now divide it by 2.5

OpenStudy (anonymous):

oooooooooooh so its 8ft right?

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

thankyou!

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