Question

You earned 90% on a science quiz. You answered 27 questions correctly. How many questions were on the test?

Answer 1

There were 30 questions on the test.

Explanation:

1. Set up your equation: 27/90 = y/100

2. Next you want to cross multiply: 2700 = 90y or 270 = 9y

3. Divide 270 by 9 to find your y: y = 30

There were 30 questions on the test.