Question

Yolanda has scored 73, 90, and 58 on her previous three tests. What score does she need on her next test so that her average (mean) is 72?

Answer 1

(73+90+58+x)/4=72
Rearrange
(73+90+58+x)=72 x 4
221+x= 288
X=288-221
x= 67
Yolanda has to score 67

Answer 2

67%

Explanation:

If you take 73+90+58 then divide it by 3, you get around 73.6 percent. So would have to score 67 percent on the test to get a mean of 72 percent.

73 + 90 + 58 + 67 divided by 4 = 72%.