Question

PLEASE ANSWER THIS QUESTION: (its basic so you will prob know it) Steve's scores on 6 of his tests were 92, 78, 86, 92, 95, and 91. If he took a seventh test and raised the mean of his scores by exactly 1 point, what was the score on the seventh test?

Answer 1

The 7th test score must be 96 to raise the mean by 1 from 89 to 90

Step-by-step explanation: Add the 6 given scores.

92+78+86+92+95+91=534 Divide by 6 to get the mean: 89

To find the required amount to raise the mean figure

(534 + x) / 7 = 90

Multiply both sides by 7

534+x= 630 subtract 534 from both sides. 640-534= 96

x = 96

To check, add 96 to the other scores then divide the New total by 7.