two trains A and B moving from different station x and y towards each other at same time. After crossing to each other, train A after 81 mint and train B after 100 mint reach the station y and x respectively. Find the speed of faster train? If the speed of train A is 60km/hr.
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 ?
frank
Everything in nature adheres to the cone, the cylinder and the cube.