SOLUTION: A man travels from City X to City Y at 4kn/h and from City Y to City X at 6km/h via the same route. The whole journey took 1 hour. Find the distance from City X to City Y
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Question 742982: A man travels from City X to City Y at 4kn/h and from City Y to City X at 6km/h via the same route. The whole journey took 1 hour. Find the distance from City X to City Y Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! A man travels from City X to City Y at 4kn/h and from City Y to City X at 6km/h via the same route. The whole journey took 1 hour. Find the distance from City X to City Y
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Let d = the distance fro x to y
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Write a time equation; time = dist/speed
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xy time + yx time = 1 hr + = 1
mult by 12 to clear the denominators, results:
3d + 2d = 12
5d = 12
d = 12/5
d = 2.4 km is the dist from x to y
:
:
Check this by finding the actual time each way + =
.6 + .4 = 1
