The marked price of a book is Rs 4200. The shopkeeper gives two successive discounts of 25% and y% to the customer. If the customer pays Rs 2898 for the book, then what is the value (in percentage) of y?
Veer spends 15% of his monthly income on the house rent and 60% of the rest on household expenditure. If he saves Rs. 2210, what is his monthly income?