Question

A person travelled a distance of 50km in 8 hrs. he covered a part of the distance on foot at the rate of 4 km per hour and a paet on a bicycle at the rate of 10 km per hour . how much distance did he travel on foot ?

Answer 1

Answer:

20 km

Step-by-step explanation:

A person travelled a distance of 50km in 8 hrs. he covered a part of the distance on foot at the rate of 4 km per hour and a paet on a bicycle at the rate of 10 km per hour

Total Distance = 50 km

Total Time taken = 8 hrs

Let say he covered X km on Foot

Speed on Foot = 4km/Hr

Time taken on Foot  = X/4  hrs

Distance covered on Bicycle = 50 - X  km

Speed on Bicycle = 10 km/Hr

Time taken on Bicycle =  (50-X)/10 = 5 - X/10 hr

Time taken on Foot + Time taken on Bicycle  = Total Time

=> X/4 + 5 - X/10 = 8

=> (5X - 2X)/20 = 3

=>  3X = 60

=> X = 20

He traveled 20 km on foot