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Asked by Anonymous

Two similar e-books and three similar apps cost $30. One such e-book and two such apps cost $17. What is the cost of one e-book?
3 years ago

Answers

Answered by oobleck
2b+3a = 30
b+2a = 17
eliminate a via
4b+6a = 60
3b+6a = 51
b = 9

also, a=4
3 years ago

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