Travel Time Question

Question

You are driving on a Canadian freeway to a town that is 500 kilometers from your home. After 30 minutes you pass a freeway exit that you know is 50 kilometers from your home. Assuming that you continue at the same constant speed, how long will it take for the entire trip?

Answer 1

50 km          500 km

--------- =  ---------------

 30 min             ? min

 

Cross multiplies:

   50 km * ? min = 30 min * 500 km

 

 50 * ? = 30 * 500

 

  ? = 30*500/50  = 30*10 = 300 minutes

5 hours

Answer 2

50 k in 30 min

100 k in 1 hour

 

How much time to travel 500 k?