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Solving A System Of Equations PowerPoint Presentation

Solving A System Of Equations

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Solving A System Of Equations

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Solving A System Of Equations

Elida Alvarez &Erika Frias

December 19, 2013

5B

The zoo charges $4 for every adult and $2 for every child. Today, the zoo had 272 people in attendance and collected a total of $664.

Find the number of $4 and $2 admission fees collected by the zoo today.

A = number of Adults admissions

C = number of Children admissions

4A + 2C = 664

A + C = 272

- We are going to solve this solution by the process of elimination.

4A + 2C = 664

- 2A + 2C = 544
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2A = 120

_______ __________

2 2

A = 60

Multiply the second equation by 2 to eliminate the variable C.

4(60) + 2C = 664

240 + 2C = 664

-240 = 240

___________________________________

2C = 424

2 2

____________________________________

C = 212

(60, 212)

4(60) + 2(212) = 664

60 + 212 = 272

The number of Adults admissions is 60.

The number of Children admissions is 212.