SOLUTION: The text for biology class cost $15.00 more than twice the cost of a used textbook for colleage algerbra. If the cost of the two books together is $129.00, find the cost of the bio

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Question 224205: The text for biology class cost $15.00 more than twice the cost of a used textbook for colleage algerbra. If the cost of the two books together is $129.00, find the cost of the biology book.
Answer by rfer(16322)   (Show Source): You can put this solution on YOUR website!
2x+15+x=129
3x=114
x=$38 algebra
2x+15=$91 biology

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