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Mathematics, 07.12.2021 08:00, Hooorax01
Help Me Please!
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?
![answer](/tpl/images/cats/otvet.png)
Answers: 1
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A repairman charges an inspection fee plus $20 per hour. A customer
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with a c...
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