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Marina86 [1]
4 years ago
12

Danielle's text messaging plan costs $14 for the first 500 messages and 10¢ for each additional text message. If she owes $27.70

for text messaging in the month of September, how many text messages did she send that month?
Mathematics
1 answer:
sasho [114]4 years ago
4 0

27.7-14=Cost above 500 msg

13.7=C

E=number of Extra messages sent

C=0.1E

13.7/0.1=E

137=E

Total messages=T

T=500+E

T=500+137

T=637

Danielle sent 637 messages in September

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