A travels to a place which is 320 km away. While going he goes at 40 kmph and returns at 60 kmph. What was the average speed maintained in the overall journey?
All I wanted to do was put together one of the best home maths systems in the world, and that's what we've done. I've loved numbers since I was two or three, and I get really excited about them. Now, I'm allowing myself to get excited about things. If you
KEERTHI
Mathematical proofs, like diamonds, are hard and clear, and will be touched with nothing but strict reasoning.