Amir’s average math score for the first 4 of 5 tests of the school year is 88. What must Amir’s score be on the fifth test so that his mean for all 5 is 90?

Amirs average math score for the first 4 of 5 tests of the school year is 88 What must Amirs score be on the fifth test so that his mean for all 5 is 90 class=