SOLUTION: Shaquita average score on her first three math test is 77. she score 62 on the first test.On the third score, she score 9 more than she score on her second test. what did she score

Question 101589: Shaquita average score on her first three math test is 77. she score 62 on the first test.On the third score, she score 9 more than she score on her second test. what did she score on the second and third test?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Shaquita average score on her first three math test is 77. she score 62 on the first test.On the third score, she score 9 more than she score on her second test. what did she score on the second and third test?
:
Let x = the second test score
then
(x+9) = the 3rd test score
:
= 77
:
= 77; combine like terms
:
Multiply equation by 3 to get rid of the denominators, resulting in:
2x + 71 = 3(77)
:
2x + 71 = 231
:
2x = 231 - 71
:
2x = 160
:
x = 160/2
:
x = 80 is the score on her 2nd test, obviously then, 89 is the 3rd test
:
:
Check solution: = 77
RELATED QUESTIONS
Kim�s average score on her first three math tests is 78. She scored 63 on the first test. (answered by Fombitz)

A student has a mean (average) score of 88 in her math class. This is the average of her... (answered by josmiceli,greenestamps)

Mariana averaged 76 on her first three exams. The first score was 77. The second score... (answered by josgarithmetic,greenestamps)

If Susan has an average score of 92 on her first five math tests. If she earns a score of (answered by amarjeeth123)

Justin has an average score of 83 on three tests. His average score on the first two... (answered by Fombitz)

Melinda scored 84%, 75% and 77% on her first three tests of the term. What score will she (answered by Boreal,ewatrrr)

Cece scored a 78 on her first math test. She scored an 84 on her second test. What is the (answered by rfer,josmiceli)

I got an average score of 80 on two tests. What score must I get on the third test so... (answered by edjones)

Anita earned a 74, 86, and 83 on her first three biology exams. What is the minimum score (answered by rfer)