Mamie saved $161.25. This is 25% of the amount she needs to save. How much money does Mamie need to save?

1 Answer
Dec 2, 2016

$645

Explanation:

25% is the same as 14

If The amount that Mamie has saved is 14 of what she needs, then the full amount will be 4 times as much.

$161.25×4=$645

Or you can write a proportion:
"If $161.25 is 25%, how much is 100%?"

25100=161.25x

x=161.25×10025

x=$645