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1 September, 15:26

A textbook store sold a combined total 440 of physics and sociology textbooks in a week. The number of sociology textbooks sold was 54 less than the number of physics textbooks sold. How many textbooks of each type were sold?

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  1. 1 September, 15:49
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    First subtract the difference of the two by the total:

    440 - 54 = 386

    Now divide that by 2:

    386 / 2 = 193

    193 is the number of Sociology books sold.

    Now add 54 to 193 for the total Physics books:

    193 + 54 = 247 Physics books were sold.
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