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31 March, 21:04

A phone company offers two monthly plans. Plan A costs

$11

plus an additional

$0.12

for each minute of calls. Plan B costs

$28

plus an additional

$0.07

for each minute of calls.

What is the cost when the two plans cost the same

+4
Answers (1)
  1. 1 April, 00:23
    0
    Set up equations.

    Y=.12 (X) + 11

    Y=.07 (X) + 28

    Set equations equal to each other and solve

    .12 (X) + 11 =.07 (X) + 28

    .05 (X) = 17

    17/.05

    X = 340
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