A bus travelled the first half of its route at an average speed of 20 km hr. If its average
speed for the entire trip was 24 km/hr, calculate the average speed of the bus for the
second half its route.
solve it by linear equation.
Answers
Given : A bus travelled the first half of its route at an average speed of 20 km hr.
average speed for the entire trip was 24 km/hr,
To Find : the average speed of the bus for the second half its route.
Solution:
Distance = Speed x Time
Let say Total Distance = 2D km
First Half = 2D/2 = D km
Speed = 20 km/hr
Time = D/20 hr
Second Half = 2D/2 = D km
Speed = X km/hr
Time = D/X hr
Total Distance = 2D km
Speed = 24 km/hr
Time = 2D/24 = D/12 hr
D/20 + D/X = D/12
=> 1/20 + 1/X = 1/12
Multiplying both sides by 60X
=> 3X + 60 = 5X
=>2X = 60
=> X = 30
average speed of the bus for the second half its route. = 30 km/hr
Learn More:
A bus covers half distance at speed V and remaining half at speed ...
https://brainly.in/question/4904717
a bus covers a certain distance with uniform speed if the speed of ...
brainly.in/question/8087282
A bus covers half distance at speed V and remaining half at speed ...
brainly.in/question/4904717
A CAR TAKES 30 MINUTES LESS THAN A BUS TO TRAVEL 90 KM ...
brainly.in/question/8448010