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svetlana [45]
3 years ago
9

How would you do this??

Mathematics
1 answer:
omeli [17]3 years ago
3 0
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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