math

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During one school year, Billy Bob earned $25 for each Math test he passed and was ined $50 for each Math test he failed. By the end of the school year, Billy Bob passes 7 times as many Math tests as he failed and he had a total of $375. How many tests did he pass?

  • math -

    Failed X tests.
    Passed 7X tests.

    25*7X - 50*X = 375,
    175X - 50X = 375,
    125X = 375,
    X = 3 Tests failed.

    7x = 7*3 = 21 Tests passed.

  • math -

    5X2-(-3)

  • math -

    the answer is 21 tests passed

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