Question

Car covers 500 km distance at a speed of 50kmph and then increases speed to 60kmph to cover another 630km,what is the average speed of the car

Answer 1

The average speed of car is 55.12kmph.

Answer 2

Answer:

55.12 km/hr

Step-by-step explanation:

Distance  = 500 km

Speed = 50 km/hr

Time = $\frac{Distance}{Speed}$

Time = $\frac{500}{50}$

Time = 10 hours

When  increases speed to 60 kmph

Distance  = 630 km

Speed = 60 km/hr

Time = $\frac{Distance}{Speed}$

Time = $\frac{630}{60}$

Time = 10.5 hours

So, Total Distance = 500km + 630 km = 1130 km

Total Time = 10 hr+10.5 hr = 20.5 hr

Average speed = $\frac{Total Distance}{Total time}$

Average speed = $\frac{1130}{20.5}$

Average speed = $55.12km/hr$

Hence the average speed of the car is 55.12 km/hr