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  • one year ago

A textbook store sold a combined total of 270 history and biology textbooks in a week. The number of history textbooks sold was two times the number of biology textbooks sold. How many textbooks of each type were sold?

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  1. anonymous
    • one year ago
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    Well, the first thing you need is a Let statement. And the last thing is the total amount. How many things are being sold and what is the relation or ratio?

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