The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

The more of this there is, the less you see. What is it?

What has to be broken before you can use it?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

What jumps when it walks and sits when it stands?