Answer:
- 2 people paid with the coupon and 6 people paid without the coupon
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Admission total is
Let the number of people paid with the coupon is c, without coupon is w.
Number of people is 8.
Set equations
- c + w = 8
- 3.25c + 5.5w = 39.5
Solve by substitution
- 3.25(8 - w) + 5.5w = 39.5
- 26 - 3.25w + 5.5w = 39.5
- 2.25w = 39.5 - 26
- 2.25w = 13.5
- w = 13.5/2.25
- w = 6
Find c