Question

Boojho walks to his school which is at a distance of 3 km from his home in 30 minutes. On reaching he finds that the school is closed and comes back by a bicycle with his friend and reaches home in 20 minutes. His average speed in km/h is
(a) 8.3
(b) 7.2
(c) 5
(d) 3.6




solve the question by process if the process will be correct I will mark was brainliest if only answer you will right and not gonna mark you as a brainliest ​

Answer 1

Given,

Distance between Boojho's home to school is 3 km

To find,

Boojho's average speed in Km/hr.

Solution,

We can easily solve the question by using the following steps.

As the distance covered from home to school is 3 km in 30 minutes

Then,

(30/60) hour = 0.5 hour

And in returning from school to home time taken = 20 min = (20/60) hour = 0.33 hour

Average speed = Total distance / time taken

= (3 + 3)/(0.5 + 0.33) km/h

= 7.2 km/h.    

Therefore, his average speed in km/h is 7.2 km/h.