Answer:
The answer to your question is adult = $12, children = $10
Step-by-step explanation:
Data
Family 1 Family 2
2 adult + 4 children = $64 1 adult + 3 children = $42
adult cost = a = ?
children cost = c = ?
Process
1.- Write two equations to solve this problem
2a + 4c = 64 Equation l
a + 3c = 42 Equation ll
2.- Solve the system of equation by elimination
-Multiply equation ll by -2
2a + 4c = 64
-2a - 6c = -84
0 - 2c = -20
c = -20/-2
c = 10
3.- Substitute c in equation ll to find a
a + 3(10) = 42
a + 30 = 42
a = 42 - 30
a = 12
4.- Conclusion
the cost for adult is $12 and the cost for adults is $10
