Can you find out the missing number in the grid?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

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

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

What does below Rebus say?

XLR8

What has to be broken before you can use it?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?