SOLUTION: I don't get how to write a proportion. For example, 15 is 25% of what? I don't get how to put it into a proportion.

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Question 110003: I don't get how to write a proportion. For example, 15 is 25% of what? I don't get how to put it into a proportion.
Answer by HyperBrain(694) About Me  (Show Source):
You can put this solution on YOUR website!
REFRESHER!!!

50%25=50%2F100 Thus, 50% of 50 is%2850%2F100%2950=2500%2F100=25
Sltn.:
25%25=25%2F100=%2825%2F5%29%2F%28100%2F5%29=5%2F20=%285%2F5%29%2F%2820%2F5%29=1%2F4

Thus,
If 15 is 25% of x, then,
%281%2F4%29x=15
x%2F4=15
%28x%2F4%294=15%2A4
x%284%2F4%29=60
x%2A1=60
x=60

THEREFORE, 15 is 25% of 60

Power up,
HyperBrain!