John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

In the image below, can you find the value of an angle(y)

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

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

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

What is the next number in this series?

4,12,84,3612....

How many times do a clock's hands overlap in a day ?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.