Question

A student’s score on the first four mathematics tests of the year were 80, 95, 92 and 89. What must the student score on the fifth test so that the mean score for all five tests is exactly 90?

Answer 1

Needs a total of 450

450 - 80 - 95 - 92 - 89 = score need on last test

Answer 2

thanks

Answer 3

You're welcome.