SOLUTION: You have a dentist appointment at 2pm. The dentist is 60km away and you expect to drive at 60km per hour, so you leave at 1pm. For the first half of the road, traffic is bad so

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Question 1134452: You have a dentist appointment at 2pm.
The dentist is 60km away and you expect to drive at 60km per hour, so you leave at 1pm.
For the first half of the road, traffic is bad so you drive at half your expected speed.
How fast do you need to travel to arrive on time?
Found 2 solutions by greenestamps, Shin123:
Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


You have traveled the first 30km at half your expected speed, 30 km/hr. You have used your whole hour; you can't get the next 30km in 0 hours.

Answer by Shin123(626) About Me  (Show Source):
You can put this solution on YOUR website!
For the first 60/2=30 km, you travel at 30km/hr. You have to travel infinitykm/hour Since that is impossible, you are going to be late to your dentist appointment.