A man can walk uphill at the rate of 2.5 hm/hr and downhill at the rate of 3.25 km/hr. If the total time required walking a certain distance up the hill and return to the starting position is 4 hr 36 min, what is the distance he walked up the hill?
একটি অপশন বেছে নিন
A man can walk uphill at the rate of 2.5 hm/hr and downhill at the rate of 3.25 km/hr. If the total time required walking a certain distance up the hill and return to the starting position is 4 hr 36 min, what is the distance he walked up the hill? D) 6.5 km।