SOLUTION: The road from village A to village B first goes uphill and then downhill. A bus moves uphill always at a speed of 30km/h and downhill always at a speed of 60km/h. Find the distance
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Question 932995: The road from village A to village B first goes uphill and then downhill. A bus moves uphill always at a speed of 30km/h and downhill always at a speed of 60km/h. Find the distance between A and B if a round trip from A to B and back without intermediate stops takes 4 hours. *Hint: Using more than one variable might help Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! The road from village A to village B first goes uphill and then downhill.
A bus moves uphill always at a speed of 30km/h and downhill always at a speed of 60km/h.
Find the distance between A and B if a round trip from A to B and back without intermediate stops takes 4 hours.
:
Let d = distance traveled at 30 there and back
also
Let d = distance traveled at 60 there and back
:
Write time equation, time = dist/speed
time uphill + time down hill = 4 + = 4
multiply by 60, cancel the denominators and you have
2d + d = 60(4)
3d = 240
d = 240/3
d = 80 km from A to B
