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5 July, 17:47

A textbook store sold a combined total of 480 history and math textbooks in a week. The number of history textbooks sold was two times the number of math textbooks sold. How many textbooks of each type were sold?

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  1. 5 July, 18:04
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    H + m = 480

    h = 2m

    2m + m = 480

    3m = 480

    m = 480/3

    m = 160 < = = = there were 160 math books

    h = 2m

    h = 2 (160)

    h = 320 < = = = there were 320 history books
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