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What distance he covered in one way?
A man walks at 4 km/hr on plain, then at 3 km/hr uphill and then returns through the same road at 6 km/hr downhill and at 4 km/hr on the plain. It takes altogether 6 hours. So what distance he covered in one way?
superstardlx
- Jul 5th, 2011
Let the distance covered one way on plain be x ,uphill be ytime = distance travelled/speedx/4 + y/3 + y/6 + x/4 = 6x/2 + y/2 = 6x+y=1212km
uling728
- Jul 3rd, 2011
24.t_p: the time for plain. t_up: the time for uphill. t_down:: the time for downhill.(1): t_up * 3 = t_down * 6 ==> t_up = 2 * t_down ; because they have the same distance.(2): t_p...
