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Solve A and show work

Solve A and show work-example-1
User Djjeck
by
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monthly fee = $21
per min = $0.16
Budget = $85
Let the number of minutes he can use be x

21 + 0.16x = 85
0.16x = 85 - 21
0.16x = 64
x = 64 ÷ 0.16
x = 400 mins
User KingRichard
by
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