A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

In an office's desk, you find a unique method that shows the current day of the month. Two numbered cubes are used to depict the current date.

Can you find out the numbers on both the cubes so that each date can be mentioned using them?

Please note that you have to use both the cubes to display any date. Thus the 1st day must be represented by 01 and so on.

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

Name a key which is hardest to turn.

There is something which is always coming but never arrives?

I always drive my customer away.

Who am I?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

how come the second man dies?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?