Question

Ebony earned scores of 75, 77, 86, 92, and 84 on five math tests. Determine her score on the sixth test if her average for the six tests was 83? Enter your answer as a whole number Your Answer: ​

Answer 1

Answer:

84

Step-by-step explanation:

Average is calculated as

average = $\frac{sum}{count}$

let x be the score on her 6th test , then

$\frac{75+77+86+92+84+x}{6}$ = 83 ( multiply both sides by 6 )

414 + x = 498 ( subtract 414 from both sides )

x = 84

Her score on the 6th test is 84