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vitfil [10]
2 years ago
11

Two mechanics worked on a car. The first mechanic worked for 5 hours, and the second mechanic worked for 15 hours. Together they

charged a total of $2125. What was the rate charged per hour by each mechanic if the sum of the two rates was $205 per hour?
Mathematics
1 answer:
Lunna [17]2 years ago
5 0

Answer:

The mechanic who worked 5 hours charged $115 per hour, the one who worked 15 hours charged $120 per hour.

Step-by-step explanation:

x = rate of mechanic who worked 5 hours

y = rate of mechanic who worked 15 hours

Then

x + y = 235

5x + 15y = 2375

Just solve these 2 equations above for x and y.

x + y = 235 ⇒ x = 235 - y

Substitute into second equation to find y.

5(235 - y) + 15y = 2375

1175 - 5y + 15y = 2375

10y = 1200

y = 1200/10 = 120

x = 235 - y = 235 - 120 = 115

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Which principle helps us to determine the total number of outcomes in a sample space?
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3 years ago
The Washington Monument in Washington, D.C., is about 556 ft. tall. A three-dimensional puzzle of the Washington Monument is 24
Umnica [9.8K]
Set up a ratio. But first convert the height of the puzzle to feet so we are comparing the same unit of measure.


STEP 1
convert 24 inches to feet

12 inches= 1 foot

24 inches= 2 feet


STEP 2
set up ratio.

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simplify both by 2

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ANSWER: 1/278 or 1:278 (can be written either way)

Hope this helps! :)
8 0
4 years ago
I need this really fast can someone help me outMalik jogged 2 miles in 20 minutes. What was his rate in miles per hour? ​
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7 0
3 years ago
Read 2 more answers
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zubka84 [21]

Answer:

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8 0
4 years ago
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