Question 163080This question is from textbook
: a washing machine technician charges $27 for the first half hour and $18 for each half hour or part thereafter. how long did the technician work if the bill did not exceed $100?
This question is from textbook
Answer by joecbaseball(37)   (Show Source):
You can put this solution on YOUR website! Let x = 30 minute (or part of) work period after the first 30 minutes.
Then the job will cost $27 + $18x, depending on how long the job lasts.
You need to keep the job under (or less than) $100, so your equation would be:
27 + 18x < 100. Now solve for x:
Subtract 27 from both sides to get:
18x < 73.
Divide both sides by 18 to solve for x to get:
x < 73/18, or x < 4.0555, but x has to be a whole number, so the first whole number less that this is 4.
So, how long did the technician work?
The first half hour at $27 dollars UP TO 4 more half hour segments. The problem did not ask for what is the most amount of time could be worked, it only says that the job cost less than $100. So the answer could be:
1 hour,
1 ½ hours,
2 hours,
2 ½ hours, or
3 hours !
Good luck !
JoeC
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