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Otrada [13]
3 years ago
7

One week, 72 people got a speeding ticket. The next week, only 36 people got a speeding ticket. What a the percent of change in

speeding tickets?
(Please explain)
Mathematics
2 answers:
guapka [62]3 years ago
8 0
I think the percentage is 50%
soldier1979 [14.2K]3 years ago
3 0
Hello.

So to solve this problem, you have to find the difference of 72 and 36. So 72 - 36 = 36. 36 will be the percentage. Then you have to find the total, which is 72 + 36 = 108. 
Basically, you have to find 36% of 108. 

36 / 100 = 0.36
0.36 x 108 = 38.88 

Have a great day! :)


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Part a) The variables are

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y (the number o boxes of juice that were sold)

Part b) The system of equations is

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Part c) x=37,y=42

Part d) The value of y represent the number of boxes of juice that were sold y=42\ boxes\ of\ juice

The value of x represent the number of packages of Twinkies that were sold x=37\ packages\ of\ Twinkies

Step-by-step explanation:

Part a) Define the variables in this situation

Let

x-----> the number of packages of Twinkies that were sold

y----> the number of boxes of juice that were sold

Part b) Write a system of equations that model the problem

we know that

x+y=79 ------> equation A  

1.65x+1.36y=118.17 ---> equation B

Part c) Use the linear combination method to find the solution to the system you wrote in part b

Multiply equation A by -1.65

-1.65(x+y)=-1.65*79  

-1.65x-1.65y=-130.35 ------> equation C

Adds equation C and equation B

-1.65x-1.65y=-130.35\\1.65x+1.36y=118.17\\---------\\-1.65y+1.36y=-130.35+118.17\\-0.29y=-12.18\\y=42

Find the value of x

x+y=79

x+42=79

x=79-42=37

Part d) Using a complete sentence, explain what the solution found in part c represents

The value of y represent the number of boxes of juice that were sold

so

y=42\ boxes\ of\ juice

The value of x represent the number of packages of Twinkies that were sold

so

x=37\ packages\ of\ Twinkies

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