SOLUTION: on the first two psychology tests, a girl had scores of 79 and 83. she wants her average to be atleast 87. what score does she need on the third test?
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Question 1125512: on the first two psychology tests, a girl had scores of 79 and 83. she wants her average to be atleast 87. what score does she need on the third test? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! on the first two psychology tests, a girl had scores of 79 and 83. she wants her average to be at least 87.
what score does she need on the third test?
;
let x = score required to have an 87 average
= 87
162 + x = 3(87)
x = 261 - 162
x = 99 is required on the 3rd test
