SOLUTION: mark had $20 before he began earning the same amount each week at his new job he used half of his first week's pay to pay back a loan. he spent $15 at the movies and $12 on a book

Question 698641: mark had $20 before he began earning the same amount each week at his new job he used half of his first week's pay to pay back a loan. he spent $15 at the movies and $12 on a book and got $25 for his birthday after his second paycheck he had$20 less than two weeks pay combined how much is his paycheck?
Answer by sofiyac(983) (Show Source): You can put this solution on YOUR website!
I've already solved this one today, you can google a problem first to see if it's already been done so we wouldn't do double work :)
If he earns x amount each week for 2 weeks then the total money he has would be 2x+20. Now we can subtract anything he spent. Half of first week's pay would be x/2 so we have
2x+20-x/2-15-12+25 so this what he has after second paychecks and problems says that it was $20 less than two weeks pay so 2x-20. Now we can set them equal to each other and solve for x.

2x+20-x/2-15-12+25=2x-20
-x/2+18=-20
-x/2=-38
x=76 So he makes $76 per week.
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