SOLUTION: Linda went food shopping with $35 in her purse. She spent $28. What percent of the $35 did she spend?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Linda went food shopping with $35 in her purse. She spent $28. What percent of the $35 did she spend?      Log On


   

Question 413154: Linda went food shopping with $35 in her purse. She spent $28. What percent of the $35 did she spend?
Answer by Blue_Skies(5) About Me  (Show Source):
You can put this solution on YOUR website!
Here's the formula that I like to use to solve problems like these that my math teacher showed me:
% part
- = ----
100 whole
So, for this question, it would be:
x 28
- = --
100 35
Then, you would use cross products, and you would create an equation like so:
35x=100*28
And then solve!
35x=2800
x=2800/35
x=80%