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06-12-2017
Mathematics

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A promotional deal for long distance phone service charges $15 basic fee plus $0.05 per minute for all calls. If joe's phone bill was $64 under this promotional deal , how much minutes of phone calls did he make?

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Superglace Superglace

06-12-2017

15+0.05m=64
15-15+0.05m=64-15
0.05m=49
0.05m/0.05=49/0.05
m=980
Joe made 980 minutes of phone calls.

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