Reza’s average in four tests is 80%. What marks does he need in his fifth test to raise his average to 84%?

Reza’s average in four tests is 80%. What marks does he need in his fifth test to raise his average to 84%?

A 96%

B 94%

C 84%

D 100%

Solution

Correct Answer: Option D

(84 X 5) - (80 X 4)

420-320 = 100 (Ans)