Debby visits her friend who lives in another city.The car ride takes 6 hours when she is driving at an average speed of 50 km/h.What would be the average speed of the car if the same journey took only 3 hours?
Question
Debby visits her friend who lives in another city.The car ride takes 6 hours when she is driving at an average speed of 50 km/h.What would be the average speed of the car if the same journey took only 3 hours?
Solution
To solve this problem, we first need to find out the total distance of the journey. We can do this by using the formula:
Distance = Speed x Time
From the problem, we know that Debby's speed is 50 km/h and the time is 6 hours. So, the total distance of the journey is:
Distance = 50 km/h x 6 hours = 300 km
Now, we need to find out what the average speed would be if the same journey took only 3 hours. We can do this by rearranging the formula to solve for speed:
Speed = Distance / Time
We know that the distance is 300 km and the time is now 3 hours. So, the average speed would be:
Speed = 300 km / 3 hours = 100 km/h
So, if the journey took only 3 hours, the average speed of the car would be 100 km/h.
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