Type the preposition which fits the gaps in all four sentences

1. The speed limit is 60 kilometres _____ hour.
2. Her consulting fee is $50 _____ hour.
3. As _____  your advice, I accepted his offer.
4. My hostel room costs only £10 _____ person _____ night.

The missing preposition is: [ ]

1. Were you _____ time for your appointment? Or were you late?
2. My house is at the end of the street _____ the right.
3. Have you read the article in The New Times magazine _____ the Internet?
4. I'm travelling to London _____ business.

The missing preposition is: [ ]