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?

Question

27-03-2018
Mathematics

contestada

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?

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Аноним Аноним · Answer 1 · 2018-03-27T08:37:25+02:00

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Find the cost of the first 10 hours:
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10 hours = $220 x 10
10 hours = $2200

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

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

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

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