Distance between Bholu’s and Golu’s house is 9 km. Bholu has to attend Golu’s birthday party at 7 o’clock. He started from his home at 6 o’clock on his bicycle and covered a distance of 6 km in 40 minutes. At that point he met Chintu and he spoke to him for 5 minutes and reached Golu’s birthday party at 7 o’clock. With what speed did he cover the second part of the journey? Calculate his average speed for the entire journey.

Explanation

To solve the problem step by step, we will break it down into parts:

### Step 1: Determine the distance covered and time taken for the first part of the journey.
Bholu covers a distance of 6 km in 40 minutes.

### Step 2: Calculate the remaining distance to Golu's house.
The total distance between Bholu's and Golu's house is 9 km. Since Bholu has already covered 6 km, the remaining distance is:
\[ \text{Remaining Distance} = 9 \text{ km} - 6 \text{ km} = 3 \text{ km} \]
...