SOLUTION: Tom received 89, 94, 86, and 96 on the first algebra tests. What grade must he receive on his last test to have an average of 92?

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Question 574606: Tom received 89, 94, 86, and 96 on the first algebra tests. What grade must he receive on his last test to have an average of 92?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = last test grade

(89+94+86+96+x)/5 = 92

(365+x)/5 = 92

365+x = 92*5

365+x = 460

x = 460-365

x = 95

So Tom must receive a 95 on the last test.