Marked price of an item is Rs 400. On purchase of 1 item discount is 6% and on purchase of 4 items discount is 24%. Rachita buys 5 items, what is the effective discount?
5. If in the population of a town there is an increase of 44% in the first year and 75% in the second year, then what is the average rate of increase in the population?
6. Two students appeared for an examination. One of them secured 13 marks more than the other and his marks were 76% of the sum of their marks. The marks obtained by them are