Answer:
Child tickets sold: 97
Step-by-step explanation:
Step 1: Write out system of equations
5.90x + 9.10y = 1282.10
x + y = 175
Step 2: Rewrite 2nd equation
y = 175 - x
Step 3: Substitution
5.90x + 9.10(175 - x) = 1282.10
Step 4: Distribute
5.90x + 1592.5 - 9.10x = 1282.10
Step 5: Combine like terms
-3.2x + 1592.5 = 1282.10
Step 6: Isolate x
-3.2x = -310.4
x = 97
And we have our final answer!