Question

Sam correctly answered 80% of the questions on his last math test if he missed 3 problems how many questions were on the test

Answer 1

Hello There!

100% - 80% = 20%
20% = 3
Therefore, 10% = 1.5
100% = 10 x 10%
100% = 10 x 1.5
100% = 15.

There were 15 questions.

Hope This Helps You!
Good Luck :) 

- Hannah ❤