Jill spent 35% of her birthday money. If she had $255, how much does she still have to spend?

Question

Jill spent 35% of her birthday money. If she had $255, how much does she still have to spend?

Answer 1

Hi Julie--

 

First find the hidden piece of info: if she SPENT 35% it means she still HAS 65%.

 

Which means we need to find 65% of 255.

 

65% is represented as 65/100, and we need to find out what chunk of 255 corresponds to it.

 

So we set up a proportion:  65/100 = n/225

 

Cross multiply and you get 100n = 65*225

 

divide both sides by 100 so you will have n = 65*2.25, or...

 

n= 146.25  That's how much money she's got left.

 

Hope this helps!

 

Matt in New York