Using eight eights and addition only, can you make 1000?

Three people check into a hotel. They pay $60 for the rent of the room. After they check-in, the manager realize that the rent for the room is $55. So, he gives $5 to the bellboy and asks him to give it to them. The bellboy thinks that it will be difficult for the three people to share $5 among them and seeking the personal benefit, he pockets $2 and gives the remaining $3 to them.

Now, each person paid $20 and got back $1. In this manner, each of them paid just $19 which totals to the amount of $57. The bellboy has $2 with him and adding them, we get $59. So where is the remaining $1?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

If 21x = 79x, what is the value of x?

I don't get anymore wetter, no matter how much rain falls on me.

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Who is that with a neck and no head, two arms and no hands? What is it?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

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 ?