Question

Theresa was taking her 2 grand children to the zoo. Theresa purchased 1 adult ticket for herself and 2 children's tickets for $18.20

A family of 5 was also visiting the zoo the family purchased 2 adult tickets and 3 children's tickets for $30.90

Answer 1

Let a = cost of an adult ticket

c = cost of a children's ticket

a + 2c = $18.20---->2a + 4c = $36.40

2a + 3c = $30.90--->2a + 3c = $30.90

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c = $5.50

a + 2($5.50) = $18.20

a + $11.00 = $18.20

a = $7.20