ashleykm
how can i find the number of a percent for example 20% of 45



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kumar2006
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9

ashleykm
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is 0.9 the same as 9

gandalfwiz
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Yes

gandalfwiz
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No, wait, 0.09 is the same

ashleykm
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i wanna know how you can find it

gandalfwiz
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"percent" pretty much means "over 100," and 9/100=.09

gandalfwiz
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You find it wit hproportions

gandalfwiz
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20/100=x/45

gandalfwiz
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cross multiply
20*45=100x

gandalfwiz
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then solve for x
900=100x
9=x

gandalfwiz
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so 9 is 20% of 45

ashleykm
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thanks