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
Algebra ->
Average
-> 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
Log On
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
