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Two mechanics worked on a car. The first mechanic worked for10 hours, and the second mechanic worked for15 hours. Together they charged a total of$

Two mechanics worked on a car. The first mechanic worked for10

hours, and the second mechanic worked for15

hours. Together they charged a total of$1675

.What was the rate charged per hour by each mechanic if the sum of the two rates was$140 per hour?

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