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30 March, 17:55

1 hour job costs $90

A 3 hour job costs $210

What is the initial amount and hourly rate

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  1. 30 March, 18:08
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    Step-by-step explanation:

    i+h=90

    i+3h=210

    so 2h=210-90=120

    h=60

    and i=90-60=30

    so initial amount is $30 and hourly rate is $60
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