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26 August, 03:45

Ralph is an electrician. He charges an initial fee of $26, plus $31 per hour. If Ralph earned $119 on a job, how long did the job take?

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  1. 26 August, 06:00
    +1
    3 hours

    You can turn this into an equation:

    F = 26 + 31t

    Where F is the money Ralph earned, and t is the number of hours he worked.

    Plugging in the 119 for F, we get

    119 = 26 + 31t

    93 = 31t

    3 = t
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