SOLUTION: A student has an average of 74 on three tests. What grade on the fourth test will bring the average to 80

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Question 879295: A student has an average of 74 on three
tests. What grade on
the fourth test will
bring the average to 80
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


If the average on three tests is 74, then the total score for the three tests must be 3 times 74. In order to have an 80 average, the total for the four tests must be 4 times 80. Hence, 4 times 80 minus 3 times 74 is what is needed for an 80 average.

John

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