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Lemur [1.5K]
3 years ago
7

Tickets to a school play cost $3 for students and $8 for adults. On opening night, $1000 was collected and 150 tickets sold. How

many of each kind of ticket were sold? Write a system of equations and use substitution to solve.
Mathematics
1 answer:
vesna_86 [32]3 years ago
7 0
Let the number of students who bought tickets be s,
Let the number of adults who bought tickets be a,

Equation 1:

3s \: + \: 8a \: = \: 1000

Equation 2:

s \: + \: a \: = \: 150 \\ s \: = \: 150 \: - \: a

Substitute ( 2 ) into ( 1 ),

3(150 \: - \: a) \: + \: 8a \: = \: 1000 \\ 450 \: - \: 3a \: + \: 8a \: = \: 1000 \\ 5a \: = \: 550 \\ a \: = \: 110

Substitute a = 110 into ( 2 ),

s \: + \: 110 \: = \: 150 \\ s \: = \: 40

Ans: 40 Student Tickets, 110 Adult Tickets
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