What scores did Angela receive on her fifth and sixth tests?

Mathematics
Tutor: None Selected Time limit: 1 Day


Angela’s average for six math tests is 87. On her first four tests she had scores of 93, 87, 82, and 86. On her last test, she scored 4 points lower than she did on her fifth test. What scores did Angela receive on her fifth and sixth tests?

a.  fifth test = 85; sixth test = 89

b.  fifth test = 85; sixth test = 81

c.  fifth test = 89; sixth test = 85

d.  fifth test = 90; sixth test = 86

May 5th, 2015

let the score of the fifth test be x, then that of the last test is x-4, 

so we have (2x-4+93+87+82+86)/6 = 87 

solve for x 

x =  89, the last test she got 85

c is correct

May 5th, 2015

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May 5th, 2015
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