Question 962943: Two mechanics worked on a car. The first mechanic worked for
10
hours, and the second mechanic worked for
15
hours. Together they charged a total of
$2450
. What was the rate charged per hour by each mechanic if the sum of the two rates was
$185
per hour?
Answer by rothauserc(4718)   (Show Source):
You can put this solution on YOUR website! let x be the rate for the first mechanic and y be the rate for the second mechanic, then
x + y = 185
10x + 15y = 2450
solve first equation for x and substitute for x in the second equation
10(185-y) +15y = 2450
1850 -10y +15y = 2450
5y = 600
y = 120
x = 65
therefore,
the rate for the first mechanic is $65/hour and the rate for the second mechanic is $120/hour
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to check our answer substitute for x and y in the second equation
10*65 + 15*120 = 2450
650 + 1800 = 2450
2450 = 2450
our answer checks
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