1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
gizmo_the_mogwai [7]
3 years ago
6

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

ged a total of . What was the rate charged per hour by each mechanic if the sum of the two rates was per hour?
Mathematics
1 answer:
AleksAgata [21]3 years ago
8 0

Answer:

The rate charged by first mechanic per hour= x =$85

The rat charged by second mechanic per hour =y = $70

Step-by-step explanation:

Two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 15 hours. Together they charged a total of $1900. What was the rate charged per hour by each mechanic if the sum of the two rates was $155 per hour?

Solution

Let

x= hourly rate of the first mechanic

y= hourly rate of the second mechanic

Derive two equations to solve for the two unknowns

10x + 15y = 1900 (1)

x + y = 155 (2)

From (2)

x + y = 155

x=155-y

Substitute x=155-y into (1)

10x + 15y = 1900

10(155-y) + 15y =1900

1550 -10y + 15y =1900

5y =1900-1550

5y=350

Divide both sides by 5

y= 70

Substitute y=70 into (2)

x + y = 155

x + (70) =155

x=155 - 70

= 85

x= 85

The rate charged by first mechanic per hour= x =$85

The rat charged by second mechanic per hour =y = $70

You might be interested in
Write the number in 2 equivalent forms as a fraction, decimal, or percent.<br> 11<br> 16
pashok25 [27]
11.
Fraction - 11/100
Decimal - 0.11
Percent - 11%
16.
Fraction - 16/100
Decimal - 0.16
Percent - 16%
3 0
3 years ago
The table models how the population of a city has changed over time.
lara31 [8.8K]
A. population in 1975 ........................
7 0
3 years ago
Read 2 more answers
Can you explain how you got the answer as well please?
Vikki [24]

Answer:

A. 35

Step-by-step explanation:

The total amount of movies that the critic rates that we are given is 20. Now they want to figure us to figure it out with 100 movies. 20 times 5 is one hundred. We are supposed to look at the 3 star reviews, which is 7 movies. 7 times 5 is 35. Hope this helps!

5 0
2 years ago
Read 2 more answers
3 1/3+(-2 1/4)+1 5/6
dlinn [17]
Exact Form:
35/12
Decimal Form:
2.916
Mixed Number Form:
2 11/12
7 0
3 years ago
Choose two answers. need help asap!
Lelu [443]
Opposite sides are congruent opposite angles are congruent
5 0
3 years ago
Other questions:
  • 2 = 2 = 1x2
    6·1 answer
  • If f(x) = 3^x and g(x) = 3^(x+1)+6. Describe the transformations from f(x) to g(x).
    7·1 answer
  • I need someone to help me solve this problem <br><br><br> 7/b+5=10/5
    9·2 answers
  • Solve the equation for x<br> bx – 10 = f
    7·2 answers
  • The question is on the picture
    6·2 answers
  • (Don't look at the bottom part)
    9·2 answers
  • (sinB+1)(cosBtanB-1)
    5·1 answer
  • Determine the type of triangle that is drawn below. ASAP PLZZ!!!!!
    9·1 answer
  • Please please please help
    14·2 answers
  • How many positive odd integers less than 10,000 can be written using the digits
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!