on his last test Greg answered 64 questions correctly. this was 80% of the questions. How many questions were on the test?

Question

it is a word problem

 

Answer 1

I always remember how to solve these because of the "is/of" method:

 

64 is = 80 of

------   ------

X         100

           

 

64 * 100 = 80 * x

 

6400 = 80x

 

80 = x

 

There were 80 questions on the test.