A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

You can hear me, but you can't touch or see me.

What am I?

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?

Which city is three-fifths chick two third cat and 50% goat?

What is full of holes but still holds water?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

Count the number of triangles in the below picture?