Question

At 4pm Charlie realizes he has half an hour to get to his grandmothers house for diner. If his grandmother lives 40 miles away how fast will Charlie have to drive to get there on time

Answer 1

Answer: Charlie have to drive at a speed of 80miles per hour in order to reach there on time.

Step-by-step explanation:

At 4pm Charlie realizes he has half an hour to get to his grandmothers house for diner. Knowing that the time he has left is 30 minutes and the distance to his grandmother's place is 40 miles, the only thing that he can control is his speed

Speed = distance travelled / time taken

40/0.5 = 80 miles per hour