How is a proportion used to solve a tax or tip problem?

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?