Question

Reasoning Krishan wants his quiz average to be at least90 so that he can get an A in the class. His current quiz scoresare: 80, 100, 85. What does he have to get on his 2052next quiz to have an average of 90?A 85B 90C 92D 95

Answer 1

Average = total of all test scores/number of tests

90 = ( 80 + 100 + 85 + x ) / 4

Solve for x

90 (4) = 80 + 100 +85 + x

360 = 265 + x

360-265 = x

95 = x