Using Only Five 5's and any mathematical operator make sum as 37

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

Find out the missing number in the picture attached:

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

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?

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

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?