Asked by anonymous
You are driving on a Canadian freeway to a town that is 200 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?
I did:
50km/30min = 120km/h
200*30/ 50 =h
120 =h
but I got 120 mins wrong.
I did:
50km/30min = 120km/h
200*30/ 50 =h
120 =h
but I got 120 mins wrong.
Answers
Answered by
oobleck
first, 50km/30min = 100km/hr
so, 200 km takes 2 hr
that's 120 min, but maybe they wanted the time in hours.
you are kind of sloppy with the units in your calculations, switching back and forth between minutes and hours.
so, 200 km takes 2 hr
that's 120 min, but maybe they wanted the time in hours.
you are kind of sloppy with the units in your calculations, switching back and forth between minutes and hours.
Answered by
anonymous
thanks oobleck
Answered by
henry2,
50km/0.5h = 100 km/h.
T = (200-50)/100 = 1.5 h.
T = (200-50)/100 = 1.5 h.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.