Question

. 1. Bunti Travels at speed of 20 kilometre per hour .
After 5 hours bubli starts from the same point and
travels towards Bunti, at a speed of 40 kilometre
per hour. What is the distance Bunty would have
Run before Bubli catches up with him?​

Answer 1

Given:

Bunti Travels at speed of 20 km/hr. After 5 hours bubli starts from the same point and travels towards Bunti, at a speed of 40 km/hr.

To find:

Distance ran by bunty before getting caught by Bubli ?

Calculation:

So, the initial separation between Bunty and Bubli before Bubli starts running be denoted as d:

$\therefore \: d = 20 \times 5$

$= > \: d = 100 \: km$

Now , when bubli catches bunty , the position of both these people is same.

$\therefore \: d + d_{(bunty)} = d_{(bubli)}$

$= > \: d + 20t= 40t$

$= > \: 100+ 20t= 40t$

$= > \: 20t = 100$

$= > \: t = 5 \: hours$

So, distance travelled by bunty in this time:

$d_{bunty} = 20 \times 5 = 100 \: km$

So, Total distance travelled by bunty before getting caught is:

$\boxed{ d_{total} = 100 + 100 = 200 \: km}$

Hope It Helps.