SOLUTION: how do u solve a question that state ; a student has scores of 88, 92, and 86 on first 3 tests. whats score must he get on the forth so her average is 90

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Question 560278: how do u solve a question that state ; a student has scores of 88, 92, and 86 on first 3 tests. whats score must he get on the forth so her average is 90
Answer by Earlsdon(6294)   (Show Source): You can put this solution on YOUR website!
Let the score on the fourth(sp) test be x, then:
Add the integers and multiply both sides by 4.
Subtract 266 from both sides.

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