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ololo11 [35]
3 years ago
10

At the movie theatre, child admission is $5.20 and adult admission is $9.00 . On Saturday, 156 tickets were sold for a total sal

es of $1027.80 . How many adult tickets were sold that day?
Mathematics
1 answer:
stiks02 [169]3 years ago
3 0

We can solve this by using systems of equations.

Let's find our first formula, how much money was made using the tickets.

5.20x + 9y = 1027.80

Here x is how many child tickets we sold and y is how many adult tickets we sold. Now that we have defined that, we can make another formula for the total tickets sold!

x + y = 156 since we sold 156 tickets that could be any combination of child and adult tickets.

Let's solve this system. I'm going to use <em>substitution</em> so I'm going to take our second formula and subtract both sides by x to get y = 156 - x.

Now I will plug this in the first equation for y to get You plug it in for y to get 5.20x + 9 (156-x) = 1027.8.

From this you can solve for x to get x = 99.

Since x + y = 156

99 + y = 156

y = 57

There were 99 child tickets and 57 adult tickets.

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