SOLUTION: Two mechanics work on a care. The first mechanice for 20 hours the second mechanic for 5 hours. Together they charged $1650. what was the total charge of the two mechanics if to
Question 764435: Two mechanics work on a care. The first mechanice for 20 hours the second mechanic for 5 hours. Together they charged $1650. what was the total charge of the two mechanics if together they charged $135.
First mechanic per hour
second mechanic per hour Answer by josgarithmetic(39623) (Show Source):
You can put this solution on YOUR website! The problem description and question need to be adjusted to be precise and more sensible. Here is what they should be:
The first mechanic worked on a car for 20 hours and the second mechanic for 5 hours. Together they charged $1650. What was the rate of price per hour of each mechanic if their rates when added together are $135?
Note, the time amounts that each mechanic worked do not come with an indication that they worked at the same time; only that each mechanic worked for a different amount of time. The question I interpreted is, what does each mechanic separately charge?
Let m = rate per hour for one mechanic
Let n = rate per hour for the other mechanic
We can make two equations.
Account for their rates:
Account for total charge:
The total charge equation can be divided by 5 to give and then you can choose any reasonable way to solve the system for m and n.
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