Question 395980
"A carpenter charged $110 for a 3 hour job and charged $160 for a 5 hour job.  At this rate how much would he charge for a job that required 8 hours to complete?"
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Some assumptions have to be made, but
The difference of 2 hours causes a difference of $50.
That implies a minimum plus an hourly charge.
Hourly = $50/2 = $25/hour
Minimum = $110 - $25*3 = $35
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Charge = $35 + $25*hr
For 8 hours = $35 + $25*8 = $235