Question

A car travels a certain distance with speed of 60km/h and returns with 50km/h. Find the average speed

Answer 1

Answer:

Going speed=60km/h

Coming speed=50km/h

Total speed=(60+50)km/h=110km/h

Average speed =(110/2)km/h=55km/h

Ans The average speed is 55km/h

Answer 2

Step by Step explanation:

Given: The speed while going is $60km/h$ and while returning is $50km/h$

To find: Average speed of the car.

i. For calculation of total speed,

We know that $S1= 60km/h$ and $S2= 50km/h$

∴ total speed is $S1+S2=TS$

⇒ $60+50$

⇒ $110 km/h$

ii. For calculation of average speed,

We know that for calculation of average, the formula is $\frac{sum of a set of numbers}{total number of values}$

Thus, $A=\frac{TS}{2}$

⇒ $\frac{110}{2}$

⇒ $55km/h$

The average speed of the car is $55km/h$.