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
Luba_88 [7]
1 year ago
11

two mechanics worked on a car. the first mechanic charged $115 per hour, and the second mechanic charged $100 per hour. the mech

anics worked for a combined total of 20 hours, and together they charged a total of $2225. how long did each mechanic work?
Mathematics
1 answer:
Citrus2011 [14]1 year ago
4 0

Hence first mechanic worked for 15 hours and second mechanic worked for 5 hours.

<h3>What is ratio and proportion?</h3>

When comparing two quantities of the same kind, ratio is utilized.

For two numbers, a and b, the ratio formula is written as a: b or a/b.

Two or more ratios are said to be in proportion if they are all equal.

Fractions are the foundation of the concepts of ratio and proportion.

Let x is the number of hours the first mechanic worked and y is the number of hours the second mechanic worked.

∵x+y = 20

x = 20 - y

115x+100y = 2225

115(20-y) + 100y = 2225

2300 - 115y +100y = 2225

15y = 75

y = 5 hours

∴ x = 20-5

x = 15 hours

To know more about ratio and proportion please visit:

brainly.com/question/26974513

#SPJ4

You might be interested in
The grasshopper jumps either one block to the north, or one block to the west. He needs to reach the point that is located four
Pavel [41]

Answer:

The number of ways the grasshopper can reach the desired destination are 9 ways

Step-by-step explanation:

The directions in which the grasshopper can jump are;

One block north  and one block west

By counting, we have;

The number of possible ways are through blocks

1) 1, 2, 5, 6, 8, 10

2) 1, 2, 5, 6, 8, 9

3) 1, 2, 5, 6, 7, 9

4) 1, 2, 3, 6, 8, 10

5) 1, 2, 3, 6, 8, 9

6) 1, 2, 3, 6, 7, 9

7) 1, 2, 3, 4, 7, 9

8) 15, 14, 16, 12, 11, 10

9) 12, 13, 16, 12, 11, 10

Therefore, there 9 ways the grasshopper can reach the desired destination.

3 0
3 years ago
The figure shows a square, a regular pentagon and a regular hexagon put together. What is the measure of ∠BAC
Elan Coil [88]

Answer:

42

Step-by-step explanation:

One angle of a regular pentagon = 108°

One angle of a regular hexagon = 120°.

One angle of a square = 90°

∴ ∠BAC = 360 – (108 + 20 + 90) 360 – 318 = 42°

8 0
2 years ago
1200((1)/(2))^(50)/(14)
Airida [17]

Answer:

aprox. 100.94

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
I am having trouble<br> 2(10-13x)=-34x+60
morpeh [17]
<span>Simplifying 2(10 + -13x) = -34x + 60
(10 * 2 + -13x * 2) = -34x + 60
(20 + -26x) = -34x + 60
 Reorder the terms: 20 + -26x = 60 + -34x
 Solving 20 + -26x = 60 + -34x
 Solving for variable 'x'.
 Move all terms containing x to the left, all other terms to the right.
 Add '34x' to each side of the equation. 20 + -26x + 34x = 60 + -34x + 34x
 Combine like terms: -26x + 34x = 8x 20 + 8x = 60 + -34x + 34x
 Combine like terms: -34x + 34x = 0 20 + 8x = 60 + 0 20 + 8x = 60
Add '-20' to each side of the equation. 20 + -20 + 8x = 60 + -20
 Combine like terms: 20 + -20 = 0 0 + 8x = 60 + -20 8x = 60 + -20
 Combine like terms: 60 + -20 = 40 8x = 40
 Divide each side by '8'. x = 5
 Simplifying x = 5</span>
7 0
3 years ago
If the total cost plus shipping is greater than $35,then you receive a 10% discount off the original selling price. Do you quali
RUDIKE [14]

<u>It's not clear what is the specific requirement of the question, but I'll assume a couple of situations to help you with your real problem.</u>

Answer:

$45 (qualified)

$30 (did not qualify)

Step-by-step explanation:

<u>Percentage Calculations</u>

Relative quantities are usually expressed as percentages (%). We say x percent of y is the proportion xy/100. When discounts or surcharges are applied, they are subtracted or added to the original quantity.

The question explains I receive a 10% discount off the original selling price if the total cost plus shipping is greater than $35. Let's assume the total cost plus shipping is $50. Since it's greater than $35, it qualifies for a discount. The discount is 10% of $50 = (10)(50)/100= $5. So the new total cost will be $50 - $5 = $45

Let's suppose now the total cost+shipping is $30. Since it's not greater than $35, no discount will be applied and we have to pay $30

7 0
3 years ago
Other questions:
  • Asking for help on this bad boy
    9·2 answers
  • 3x-100 what does x equal?
    7·2 answers
  • Choose true if the event is independent or false if the event is not independent.
    5·1 answer
  • 266.88 is closest to 280, 300, 2,800
    10·2 answers
  • Evaliate each expression for the given value of x What is 2x+3 for x=3
    6·2 answers
  • I’ve been stumped on this question for a while (picture included)
    11·1 answer
  • Tyler has a three-dimensional shape with a bottom layer of 12 cubic inches. What is the volume of this figure if it has 3 layers
    9·2 answers
  • Express as a trinomial <br> (3x + 8)(2x + 1)
    11·1 answer
  • Find the tangent of ∠I.
    12·1 answer
  • PLEASE HELP ME QUICKKK, FIRST CORRECT PERSON GETS BRAINLIEST​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!