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The restaurant charges $35 per person for lunch. For every 4 persons, one of them dines free. How much will a group of 17 persons have to pay for lunch at

the restaurant?


There are 17 persons going for dinner. If we want to distribute them in groups, then the condition will be-4 groups with one person left. If the condition is that in every four persons, one is to get dine free, then it means in four groups, where are 16 people, 4 will dine free. Left,(16-4+1=)13 people who will have to pay for the dinner. So, 13*35=$455, which is the answer.
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No. of people=17
groups formed=4
remaining person=1
cost reduced no. of people = 4
remaining people=13
so cost=13*35=455$
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