13. A repairman charges an inspection fee plus $20 per hour. A customer
with a coupon for 40%...
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Mathematics, 18.02.2020 08:08, alex7078
13. A repairman charges an inspection fee plus $20 per hour. A customer
with a coupon for 40% off the inspection fee pays $110 for a 4-hour repair.
How many hours are worked when a customer pays $90 without a coupon?
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Answers: 1
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