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?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

If six children and two dogs were under an umbrella, how come none of them got wet?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

I have eight fingers and two thumbs but I do not live. What Am I?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?