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s344n2d4d5 [400]
3 years ago
10

HELP!! 25 PTS!!

Mathematics
2 answers:
LuckyWell [14K]3 years ago
5 0

Answer:

20?

Step-by-step explanation:

i think im not sure try it if im wrong 1 star me if im write 5 star me

Evgen [1.6K]3 years ago
5 0
Let’s define our variables: x represents child passes and y represents adult passes.

Now, let’s make some equations with the provided information.

First, let’s deal with the money

12x+15y=4140

Next, the amount of passes

x+y=300

Then, take the second equation, and subtract y over.

x=300-y

Now, we can substitute the equation above in for x in the first equation

12x+15y=4140
12(300-y) +15y =4140

Distribute the 12

3600-12y+15y=4140

Combine like terms, then subtract 3600 over

3y=540

Divide by 3 on both sides

y=180

So, 180 $15 entry passes were sold
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