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Two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 5 hours. Together they charged a total of $1400.
What was the rate charged per hour by each mechanic if the sum of the two rates was $165 per hour

Respuesta :

Answer:

$115/hr    The 10 hr mechanic

$50/hr    The 5hr mechanic

Step-by-step explanation:

let the 10 hr mechanic charge x

then the 5 hr mechanic charges 165 - x

------------------------------

10x + 5(165 - x) = 1400

10x + 825 - 5x = 1400

5x = 575

x = 115    The 10 hr mechanic

165 - x = 50    The 5hr mechanic

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