Ticket for an adult is Rs 1000 and a child is Rs 500. One child goes free with two adults. If a group has 17 adults and 5 children what is the discount the group gets?
Cost price of adult ticket = Rs. 1000 and child ticket = Rs. 500
For 17 adults and 5 children, total cost = $$(17 \times 1000) + (5 \times 500) = Rs. 19,500$$
If one child goes free with two adults, => 5 children will go with 10 adults, thus all the children will go for free.
Cost of 17 adults = $$17 \times 1000 = Rs. 17,000$$
Discount % = $$\frac{19500 - 17000}{19500} \times 100$$
= 12.82%
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