Question

A student's four test scores were 88, 91, 93 and 86. What score would be needed on a fifth test to obtain a mean of 90 for all five test?

A. 90
B. 92
C. 95
D. 96

Answer 1

92

Explanation:

88 + 91 + 93 + 86 = 358

90*5 = 450

therefore the fifth test has to be 450 - 358 = 92