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Ira Lisetskai [31]
3 years ago
12

PMark for Review

Mathematics
1 answer:
SVEN [57.7K]3 years ago
7 0

Answer:

Y = 6

Step-by-step explanation:

On the first day of ticket sales the school <em><u>sold 3</u></em> adult ticket and <em><u>8 student</u></em> tickets for a <u><em>total of $72</em></u>. The school took in <em><u>$152</u></em> on the second day by selling <em><u>7 adult tickets and 16 student tickets.</u></em> How much is a student ticket?  

Day 1: 3x + 7y = 72

Day 2: 7x + 16y = 152

This becomes a system of equations.

3x+8y=72

3x+8y+−8y=72+−8y (Add -8y to both sides)

3x=−8y+72

3x/3 =  −(8y+72)/3

X = (-8/3) y + 24

Substitute  (-8/3) y + 24 for x in7x+16y=152:

7(-8/3 y + 24) + 16y = 152

-8/3 y + 168 = 152 (Simplify both sides of the equation)

-8/3 y + 168 − 168 = 152 + (−168) (Add -168 to both sides)

-8/3 y = -16

(-8/3 y)/(-8/3 y) = -16/ -8/3 y (Divide both sides by (-8)/3)

<em>y = 6</em>

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<h3>What is the total cost?</h3>

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Before accepting the position, Janice wants to understand her potential cost of living.

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Learn more about the total cost here;

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