Paige has math problems for homework. First she did 32 problems. later she did the last 20%. How many problems did she have at first?

Question

My question is about percentages. I would really appreciate if you answer the problem this night. Thank you for your help.

Answer 1

Hi Dalinda--

 

Think of it like this: the 32 she already did are 80 percent of the assignment.

 

So 32/n is equivalent to 80/100

 

Cross-multiply to get 80n = 3200

 

Divide both sides by 80:

 

n= 40

 

So she started with 40, and did 80 percent of them, which was 32 problems; then she had 20 percent left, which was 8.

 

Hope this helps!

 

Matt up in Westchester