We are given two equations relating the number of adult tickets and children's tickets to the total cost. We need to find the price of an adult ticket and a child's ticket. Equation 1: Three adults and four children pay $101. Equation 2: Two adults and three children pay $72.

AlgebraSystems of EquationsLinear EquationsWord ProblemElimination Method
2025/3/11

1. Problem Description

We are given two equations relating the number of adult tickets and children's tickets to the total cost. We need to find the price of an adult ticket and a child's ticket.
Equation 1: Three adults and four children pay $
1
0

1. Equation 2: Two adults and three children pay $

7
2.

2. Solution Steps

Let aa be the price of an adult ticket and cc be the price of a child's ticket.
We can write the given information as a system of two linear equations:
3a+4c=1013a + 4c = 101
2a+3c=722a + 3c = 72
We can solve this system of equations using substitution or elimination. Let's use elimination. Multiply the first equation by 2 and the second equation by 3 to eliminate aa.
2(3a+4c)=2(101)2(3a + 4c) = 2(101)
3(2a+3c)=3(72)3(2a + 3c) = 3(72)
This gives us:
6a+8c=2026a + 8c = 202
6a+9c=2166a + 9c = 216
Subtract the first equation from the second equation:
(6a+9c)(6a+8c)=216202(6a + 9c) - (6a + 8c) = 216 - 202
c=14c = 14
Now that we have the price of a child's ticket, c=14c=14, substitute this into either equation to find the price of an adult's ticket. Let's use the second equation:
2a+3c=722a + 3c = 72
2a+3(14)=722a + 3(14) = 72
2a+42=722a + 42 = 72
2a=72422a = 72 - 42
2a=302a = 30
a=15a = 15
The price of an adult ticket is 15andthepriceofachildsticketis15 and the price of a child's ticket is
1
4.

3. Final Answer

The price of a child's ticket is $14.

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