Narayan murthy walking at the speed of 20kmph reaches his college 10minutes late . next time he increase his speed by 5kmph but find that he is still a late by 4 Minutes . what is the distance of his college from his house .??
Answers
Answer:
10 kms
Step-by-step explanation:
Given Narayan murthy walking at the speed of 20kmph reaches his college 10 minutes late . next time he increase his speed by 5kmph but find that he is still a late by 4 Minutes . what is the distance of his college from his house
Assume that he should reach in x minutes
Let first he will reach in x + 10 minutes
Next time he will reach in x + 4 min
We know that distance = speed x time
In first case we get
distance = 20(x + 10)
= 20 x + 200
So in the second case
distance = 25 (x + 4)
= 25 x + 100
Equating both we get
20 x + 200 = 25 x + 100
5 x = 100
x = 20 min (actual time)
So in I case he will reach by x + 10 = 20 + 10 = 30 min
So in 1 hour he will travel 20 kms
So in 30 min he will travel 20 x 30 / 60 = 10 kms
The distance of his college from his house is 10 kms
Answe...
Step-by-step explanation:
5/15*6=18km
