The restaurant charges rupees 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 4 groups of 4 people + 1 person. So the number of free lunch = 4
The number of lunch to be paid = 17-4 = 13
13 lunch cost 13 x 35 = 455 rupees