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makvit [3.9K]
3 years ago
7

in a survey 3/10 people named blue as their favorite color. one out of the 5 named red. if 1,200 people were included in the sur

vey, how many named blue or red as there favorite color
Mathematics
1 answer:
Brut [27]3 years ago
5 0

The integer for one out of 5 is 1/5.

Knowing this, we simply do

(3/10 + 1/5)*1200

(3/10 + 2/10) * 1200

5/10 * 1200

1/2 * 1200 = 600.

600 people named red and blue as their favorite color.

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6 0
3 years ago
On a quiz show, Linda won $10 less than three times as much as Charlie. If Linda won $800, how much did Charlie win?
PilotLPTM [1.2K]

Using a system of equations, it is found that Charlie won $270.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are:

  • Variable x: Amount earned by Linda.
  • Variable y: Amount earned by Charlie.

Linda won $10 less than three times as much as Charlie, hence:

x = 3y - 10

Linda won $800, hence the amount won by Charlie is found as follows:

800 = 3y - 10

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More can be learned about a system of equations at brainly.com/question/24342899

#SPJ1

7 0
1 year ago
Solve: 3,125 = 5–10 + 3x <br> X= ?
Mandarinka [93]
3,125=5-10+3x
-10          -10
3,115=5+3x
-5       -5
3,110=3x
------   -----
3          3
5=x
x=5
3 0
3 years ago
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