Answers

2014-06-14T10:23:05+05:30
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=$455, which is the answer.
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2014-06-14T10:55:45+05:30
No. of people=17
groups formed=4
remaining person=1
cost reduced no. of people = 4
remaining people=13
so cost=13*35=455$
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