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Answer:
Step-by-step explanation:
Ticket price for 2 adults = 55 * 2 = £ 110
Ticket price for 2 children = 45 * 2 = £ 90
Ticket price for 2 children & 2 adult = 110 + 90 = £ 200
Ticket price for family = £ 170
Discount = 200 - 170 = £ 30
Percentage of discount = (30/200) *100
= 15 %