Rekha sells a DVD player to Liza at a profit of 15% and Liza sells it to Megha at a profit of 25%.
If Megha pays ₹2,875 for it, then find the cost price for Rekha.
Maths is your friend
If you meet with him every day, he becomes your best friend.
If you leave for a time he forget you and you forget him.
Muhammad Ahmed
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?