Answer:
34 adults, 31 children
Step-by-step explanation:
First, we need to get an equation that shows how many adults (x) and children (y) attended.
1. x + y = 65
Now we need an equation that gives the total cost of the concert tickets.
$2.75x + $1.75y = $147.75
Now, using the method of elimination, we will multiply the first equation by -1.75 and add it to the second equation to eliminate a variable.
-1.75x - 1.75y = -113.75
2.75 + 1.75 = 147.75
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x = 34
Now, we know how many adults went to the concert. We can now solve for how many children went.
34 + y = 65
-34 -34
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y = 31
31 children went to the concert.
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