Question

Help on question 32 please

Answer 1

Answer:

90

Step-by-step explanation:

The mean is measured as

mean = $\frac{score}{count}$

After 5 tests the mean is 84, that is

$\frac{score}{5}$ = 84 ( multiply both sides by 5 )

score = 420

let the sixth test score be x, then

$\frac{420+x}{6}$ = 85 ( multiply both sides by 6 )

420 + x = 510 ( subtract 420 from both sides )

x = 90

Require to score 90 on the sixth test