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21 September, 21:12

A phone company offers two monthly plans. Plan A costs $30 plus an additional $0.15 for each minute of calls. Plan B costs 25$ plus an additional $0.20 for each minute of calls.

For what amount of calling do the two plans cost the same?

What is the cost when the two plans cost the same?

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  1. 21 September, 21:38
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    A phone company offers two monthly plans. Plan A costs $30 plus an additional $0.15 for each minute of calls. Plan B costs $16 plus an additional $0.20 for each minute of calls.

    For what amount of calling do the two plans cost the same?

    What is the cost when the two plans cost the same?

    Plan A = 30 + 0.15x

    Plan B = 16 + 0.20x

    30+0.15x = 16+0.20x

    subtract 16 from each side

    14 + 0.15x = 0.20x

    subtract 0.15x from each side

    14=0.05x

    x = 14/0.05 = 280 minutes

    280*0.15 = 42 + 30 = $72

    280 * 0.20 = 56 + 16 = 72

    280 minutes and cost $72 each
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