Question

Anne and Maria play tennis almost every weekend. So far, Anne has won 12 out of 20 matches. How many matches will Anne have to win in a row to improve her winning percentage to 75%?

Answer 1

12/20 as a percentage = 60
75% = 15 matches out of 20

1/4 of 20 = 5
75% = 20 - 5 / 20
75% = 15 / 20