How can you make number one disappear by adding something to it?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

On a windy rainy night , I was driving in my car.
When i reach the bus stand , i see three people waiting for the bus.

1. An old lady who needs an immediate medical attention
2. My Best Friend
3. Girl whom i love from childhood

My car is a two seat, so can you tell me , what i have done in this situation ?

What breaks yet never falls, and what falls yet never breaks?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?