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Aleks [24]
3 years ago
6

two mechanics worked on a car. the first mechanic worked for 10 hours, and the second mechanic worked for 15 hours. together the

y charged a total of $2675. what was the rate charged per hour by each mechanic if the sum of the two rates was $210 per hour?
Mathematics
2 answers:
STALIN [3.7K]3 years ago
8 0

Answer:

i think its 50

Step-by-step explanation:

Tatiana [17]3 years ago
4 0

Answer:

The answer to your question is: rate charged by

Mechanic 1 = $95

Mechanic 2 = $ 115

Step-by-step explanation:

Data

mechanic 1 = 10 hours  = x

mechanic 2 = 15 hours = y

total charged = $2675

rate charged per hour = ?

sum of the two rates = $210

Write equations

                             x + y = 210                       (I)

                          10x + 15y = 2675                (II)

Solve the equations by elimination

Multiply I by -10

                           -10x - 10y = -2100

                            10x + 15y = 2675                Add the equations

                              0   + 5y = 575                  Find y

                                        y = 575/5          

                                       y = $ 115   Mechanic 2

Find x

                       x + 115 = 210

                       x = 210 - 115

                      x = $95              Mechanic 1                          

 

                               

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nirvana33 [79]
Total = Principal * (1+(rate/n))^n*years
Total = 1,200 * (1.015)^14
Total = 1,200 * <span><span><span>1.2317557307 </span> </span> </span>
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Source:
http://www.1728.org/compint3.htm




8 0
3 years ago
A cylindrical container's lateral surface is to be covered by a label. The container's diameter is 5 inches, and its height is 8
Nezavi [6.7K]

Answer:

The correct option is C. 126 in²

Step-by-step explanation:

Diameter of the container = 5 inches

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Height of the container = 8 inches

To find how much paper is needed to create the label : We need to find the lateral surface area of the cylindrical shaped container

Lateral Surface Area of Cylinder = 2·π × radius × height

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Hence, 126 square inches of paper is needed to create the label.

So, The correct option is C. 126 in²

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Step-by-step explanation:

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