Question

1. On his math tests, Matthew scores 80, 85, 92,

78, and 90. He has one more test to go. If he
wants to get an 87 for his final grade, what
score must he get on the last test?

Answer 1

Answer is 97 on his last test

We know that he will have 6 tests with an average score of 87 x 6 = 522

His cumulative score needs to be 522

His current scores of 5 tests = 425

522 needed - 425 he had now = 97

If he scores a 97 his last test, his average will be 87 for 6 test scores