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26 votes
26 votes
Review the bar graph below:

Review the bar graph below:-example-1
User DRiFTy
by
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1 Answer

21 votes
21 votes

Answer:

B. 12.5%

Explanation:

Add all the hours together to get 20. We make the assumption that 20 is 100% since it is our output value. We next represent the value we seek with x. From step 1, it follows that 100%=20. In the same vein, x%=2.5.This gives us a pair of simple equations:

100%=20(1)

x%=2.5(2)

By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS (left hand side) of both equations have the same unit (%); we have


(100)/(x)=
(20)/(2.5)

Taking the inverse (or reciprocal) of both sides gives us this:


(x)/(100) =(2.5)/(20)

>> x=12.5\%

Therefore, 2.5 is 12.5% of 20.

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