Question

A student finished 18 of her homework problems in class. IF the ratio of the problems she finished to the problems she still had left was 6:1, how many homework problems did she have in total?

Answer 1

She had 21 problems in total

Explanation:

For every six problems she finished, she had 1 left. 18÷6=3. This can be written as 18:3, meaning that there were 21 questions in total.