SOLUTION: If you were to use cellphone for only 40min in a month,total monthly cost will be R100.how is thi calculated?

SOLUTION: If you were to use cellphone for only 40min in a month,total monthly cost will be R100.how is thi calculated?

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Question 840482: If you were to use cellphone for only 40min in a month,total monthly cost will be R100.how is thi calculated?
Answer by Phillips54(20) (Show Source): You can put this solution on YOUR website!
100/40=2.5
for every minute it is $2.50.
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