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I started climbing up the hill at 6 a.m. and reached the top of the temple at 6 p.m. Next day I started coming down at 6 a.m. and reached the foothill at 6 p.m. I walked on the same road. The road is so short that only one person can walk on it. Although I varied my pace on my way, I never stopped on my way. Then which of the following must be true?
I started climbing up the hill at 6 a.m. and reached the top of the temple at 6 p.m. Next day I started coming down at 6 a.m. and reached the foothill at 6 p.m. I walked on the same road. The road is so short that only one person can walk on it. Although I varied my pace on my way, I never stopped on my way. Then which of the following must be true?
A) My average speed downhill was greater than my speed uphill
B) There must be a point where I reached at the same time on both the days.
C) There must be a point where I reached at the same time on both the days.
D) There cannot be a spot where I reached at the same time on both the days.
Can somebody explain the solution.?
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Answer
if the speed is constant she would have reached a point during both climbing and coming down(12pm).if not then the point can,t be determined since we are unaware of the speed.
