How can you drop a raw egg from a height onto a concrete floor without cracking it?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

What English word has three consecutive double letters?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

Who has married many women but was never married?

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

Jim has three close friends at his school: Michael, John and Alice. Two of them play football, two play basketball and two play hockey. The friend who does not play hockey does not play basketball as well. The friend who does not play football does not play hockey.

Can you identify which sport/s is played by which person?