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anonymous
 one year ago
Two mechanics worked on a car. The first mechanic worked for 20 hours, and the second mechanic worked for 15 hours. Together they charged a total of $3225. What was the rate charged per hour by each mechanic if the sum of the two rates was $190 per hour?
First mechanic: $ per hour
Second mechanic :$ per hour
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anonymous
 one year ago
Two mechanics worked on a car. The first mechanic worked for 20 hours, and the second mechanic worked for 15 hours. Together they charged a total of $3225. What was the rate charged per hour by each mechanic if the sum of the two rates was $190 per hour? First mechanic: $ per hour Second mechanic :$ per hour Will medal

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Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0first off, lets define our variables f = number of hours worked by the first mechanic s = number of hours worked by the second mechanic, with me so far?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0actually, let me make a quick correction

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0f = the rate charged by the first mechanic s = the rate charged by the second mechanic

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0anyway, it says that the sum of the rates is $190 so f + s = 190, with me so far?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0now, it says that they charged 3225 together, total so now, we can write another equation first mechanic money + second mechanic money = 3225

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0so, now we can write an expression to figure out how much each mechanic made the first mechanic worked 20 hours, so he charges: 20f the second mechanic worked 15 hours, so he charges: 15s

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0that gives us two equations: f + s = 190 20f + 15s = 3225 solve for f and s

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0start by multiplying the first equation by 20
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