A person walks downhill at 10 km/h, uphill at 6 km/h and on the plane at 7.5 km/h. if the person takes 3 hours to go from a place a to another place b, and 1 hour on the way back, the distance between a and b is
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i think the distance is 36km becouse speed to up hill is 10km/ hr and downhill is 6km/hr and the time taken is 3 km and 1 km so the distance to go to upward is 3x10+ 1x6 is 36 kilometres
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