SOLUTION: the average of 5 test scores is a 78. what is the fith score if the first 4 scores are 71 92 68 84
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Question 771336: the average of 5 test scores is a 78. what is the fith score if the first 4 scores are 71 92 68 84
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
(71+92+68+84+x)/5 = 78
(315+x)/5 = 78
315+x = 78*5
315+x = 390
x = 390-315
x = 75
The fifth score is 75
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