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02-02-2018
Mathematics

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How would you do this??

How would you do this class=

Respuesta :

02-02-2018

x= total number of problems

This is a proportion problem. 80% is to 100% as 32 problems is to x problems.

80/100=32/x
Cross multiply
(80*x)=(100*32)
80x=3200
Divide both sides by 80
x=40

There were 40 questions on the test.

Hope this helps! :)

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