A car travels a distance 50 km with a velocity 25 km `h^(-1)` and then 60 km with a velocity 20 km `h^(-1)` in the same direction. Calculate : (i) the total time of journey and (ii) the average velocity of the car.

Explanation

To solve the problem step by step, we will calculate the total time of the journey and the average velocity of the car.

### Step 1: Calculate the time taken for the first part of the journey
The car travels a distance of 50 km with a velocity of 25 km/h.

Using the formula:
\[
\text{Time} = \frac{\text{Distance}}{\text{Velocity}}
...