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WITCHER [35]
3 years ago
14

Wo 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 $2725 . what was the rate charged per hour by each mechanic if the sum of the two rates was $220 per hour?
Mathematics
1 answer:
anyanavicka [17]3 years ago
4 0
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Find the cost of the first 10 hours:
------------------------------------------------------------------------------------------------------
10 hours = $220 x 10
10 hours = $2200

------------------------------------------------------------------------------------------------------
Find the cost of the next 5 hours (only the second mechanic worked):
------------------------------------------------------------------------------------------------------
5 hours  = $2725 - $2200 
5 hours = $525

------------------------------------------------------------------------------------------------------
Hourly charge of the second mechanic:
------------------------------------------------------------------------------------------------------
5 hours = $525
1 hour = $525 ÷ 5
1 hour = $105

------------------------------------------------------------------------------------------------------
Hourly charge of the first mechanic:
------------------------------------------------------------------------------------------------------
$220 - $105 = $115


------------------------------------------------------------------------------------------------------
Answer: First mechanic = $115/hour ; Second mechanic = $105/hour
------------------------------------------------------------------------------------------------------
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