need help with word problem

label Algebra
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Nancy has a test score of 75 on her first test. What must she score on a second test to have an average of 83 on the two tests?
89
May 19th, 2015

To solve this problem, we can set up and solve an equation using the average.

(x + 75)/2 = 83

Multiply by 2.

x + 75 = 166

Subtract 75.

x = 91

Nancy needs to score a 91 on her second test to have an average of 83.

May 19th, 2015

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May 19th, 2015
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May 19th, 2015
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