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13 November, 18:37

A textbook store sold a combined total of

475

physics and math textbooks in a week. The number of math textbooks sold was

61

less than the number of physics textbooks sold. How many textbooks of each type were sold?

+4
Answers (1)
  1. 13 November, 18:58
    0
    M+p=475

    m=p-61

    replace m in equation 1 with p-61: p-61+p=475

    2p=475+61=536

    p=268

    m=207
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