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150 (42/0.28) To answer a problem such as this use the formula:

a % #/100 = is/of (a % # over '100' b/c the most you can have is 100%)

[equation reads, "a percentage number over 100 equals 'is' over 'of'"]

So in your case it would be:

1) 28/100 = 42/x (then you cross multiply which gives you):

[you have the 'is' as your original question states "is 42." You are trying to find the 'of']

2) 28x = 4200 (then divide 4200 by 28 to solve for x)

x=150

Then to check your answer, plug 150 into the x in the original equation and make sure both sides equal each other.

So:

28/100= .28 & 42/150= .28

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16y ago

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More answers

28/42*100=66.6666666

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Wiki User

15y ago
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42 is 28% of 150

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Wiki User

12y ago
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Q: 28 percent of what number is 42?
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