Anoop sells a book to Mayank at a profit of 20% and Mayank sells this book to Siddharth at a profit of 25%. Now Siddharth sells this book at a loss of 10% to Shishir. At what percentage loss should Shishir sells this book now so that his SP becomes equal to Anoop’s CP?

A certain sum becomes Rs 840 in 3 years and Rs 1200 in 7 years at simple interest. What is the value (in Rs) of principal? 

A wheel travels a distance of 22 km in 2500 revolutions. What is the diameter of the wheel?

Ticket for an adult is Rs 1600 and a child is Rs. 600.  1 child goes free with two adults. If a group has 17 adults and 7 children what is the discount the group gets? 

If , and , then what is the value of ?

Find the HCF of 306, 204 and 136.

After a discount of 20% Asmita bought an item for Rs.9600. Asmita sold it to other person and earned a profit of 18% on the original price. At what price other person bought the item?