medium · GMAT Quant
A drone delivery service charges $!3.00 per mile for the first 10 miles of a flight. Deliveries exceeding 10 miles incur a long-range flight permit fee of $!15.00, plus $!5.00 per mile for each mile exceeding 10.
What was the total flight distance, in miles, for a delivery that cost $!70.00?
- 11
- 13.3
- 15
- 18.3
- 23.3
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