MATHS

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A store clerk sold 25 maths books and 10 english books for $855.00 .if she sold 10 maths books and 40 English books, she would have got $135 more. calculate the cost of each book.

  • MATHS -

    Let m be the math book cost (in dollars) and e be the english book cost (also in dollars). Solve these two equations simultaneously:
    25m + 10e = 855
    10m + 40e = 855 + 135 = 990

    100m + 40e = 3420

    90m = 2430
    m = 27

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