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
Luda [366]
2 years ago
9

If 55% of a number is 132 and 25% of the same number is 60, find 80% of that number.

Mathematics
1 answer:
UNO [17]2 years ago
4 0

Answer:

  192

Step-by-step explanation:

It is always wise to look carefully at the question to see what information is given, and what information you are asked for. You are given two different fractions of the same number, and you want the value of a third fraction of that number. That third fraction is the sum of the other two.

__

The value of 80% of the number will be the sum of 55% and 25% of the number.

  n×80% = n×55% +n×25%

  n×80% = 132 +60

  n×80% = 192

80% of the number is 192.

_____

<em>Additional comment</em>

Your first clue that there may be something special about this problem lies in the fact that one fraction of a number is all you need in order to find any other fraction. Here, we're given two fractions (55% and 25%), so that is more information than we need. Why? Because it simplifies the problem to one of addition. No proportions need to be solved.

__

If you were interested, you could determine 100% of the number to be ...

  132/n = 55/100   ⇒   n = 132(100/55) = 240

or

  60/n = 25/100   ⇒   n = 60(100/25) = 240

Then ...

  0.80n = 0.80(240) = 192 . . . . 80% of the number

Or, you could write proportions for the 80% value:

  80%/55% = n/132   ⇒   n = 132(80/55) = 192 . . . . 80% of the number

  80%/25% = n/60   ⇒   n = 60(80/25) = 192 . . . . 80% of the number

__

"Look carefully" includes thinking about the ways the <em>givens</em> and the <em>finds</em> are related.

You might be interested in
Solve for x 3x + 3 - x + (-7) &gt;6
PSYCHO15rus [73]
I think it is x > 5 because if you combine like terms you would get 2x-4>6 then you add 4 To 6 which is 10 then you do 10÷2 which is 5
8 0
3 years ago
Emma has a gift box in the shape of a cube. Each side of the box measures 9 centimeters. What is the volume of the gift box?
BARSIC [14]

Answer:

729

Step-by-step explanation:

Each side of the cube measures 9cm

The volume of a cube is V^3

Therefore the volume can be calculated as follows

= 9^3

= 729

Hence the volume is 729

3 0
3 years ago
MODELING REAL LIFE You purchase a car from a dealership for $10,000. The trade-in value of the car each year after the purchase
Crazy boy [7]

Answer:7500

Step-by-step explanation:

4 0
1 year ago
Emelia earns $8.00 per hour plus a gas allowance of $3.50 per day at her job. How much does Emilia's job pay in a day when she w
Bogdan [553]

Answer: Required expression = 8h +3.50

Emilia's job pay  $ 43.5 in a day when she works 5 hours.

Step-by-step explanation:

Given: Hourly earning = $8.00

gas allowance per day =  $3.50

Pay per day = (Hourly earning ) x (Number of hours ) + (gas allowance per day)

Let h = number of hours

Pay per day = 8h +3.50

If Emily worked for 5 hours, then put h= 5, we get

Pay per day = 8(5) +3.50

= $ 40 +3.50

= $ 43.5

Required expression = 8h +3.50

Emilia's job pay  $ 43.5 in a day when she works 5 hours.

7 0
3 years ago
Which graph shows the line y - 2 = 2(x + 2)?
klasskru [66]
For this case we have the following linear function:
 y - 2 = 2 (x + 2)&#10;
 Rewriting we have:
 y - 2 = 2x + 4&#10;&#10;y = 2x + 4 + 2&#10;&#10;y = 2x + 6
 We observe that the linear function has:
 Positive slope and equal to 2.
 Intersection with the axis y equal to 6.
 Answer:
 
y = 2x + 6
 
See attached image

7 0
3 years ago
Other questions:
  • Solve the following system by graphing.
    15·2 answers
  • Please help!!!!I will give Thanks and Brainliest
    12·2 answers
  • (3-p)^2<br> How to solve this steps
    14·1 answer
  • An airplane flies 750 miles due west in 1 1! 2hours and 750 miles due south in 2 hours. what is the average speed of the airplan
    14·1 answer
  • The owner of a toy store received a shipment of 1,552 party favors. The party favors came in 28 boxes. The same number of party
    8·1 answer
  • Help please I’ll give extra points
    12·1 answer
  • Need help cant find the right answer for this one
    13·1 answer
  • The mean plus the standard deviation is:
    8·1 answer
  • Find the area of sector =?
    15·1 answer
  • Solve the equation by the Quadratic Formula. Round to the nearest tenth, if necessary. Write your solutions from least to greate
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!