John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

It is always ahead of me yet I can never see it. What is it?

What Does this text mean:

important=important

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Which word does the below Plexor means ?