SOLUTION: One travels city X to city Y in 2 hour first half of the distance he travels with speed of 40 miles/hr and rest with 60 miles/hr what is avg speed of entire journey
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Question 325603: One travels city X to city Y in 2 hour first half of the distance he travels with speed of 40 miles/hr and rest with 60 miles/hr what is avg speed of entire journey
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
let the distance from X to Y be 2d
d/40 time taken for first leg of the trip.( speed = 40mph)
d/60 time taken for second leg of the trip ( speed = 60 mph)
d/40+d/60= 2
3d+2d / 120 = 2
5d= 240
d=48 miles.
X to Y will be 96 miles.
Time taken = 2hours
Average speed = 96/2= 48 mph
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