By rowing half the distance and walking the other half, a man can travel 24 km on a river in 5 hr with the stream and in 7 hr against the stream. If there were no current, the journey would take 5.66 hr. Q1. What is the rate of speed at which he walks? Q2. what is the speed at which he rows? Q3. What is the speed of the current ? __________________
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Q1. What is the rate of speed at which he walks?
a. 2 km/hr
b. 3 km/hr
c. 4 km/hr
d. 5 km/hr
ans: c. 4 km/hr
Q2. what is the speed at which he rows?
a. 2.5 km/hr
b. 3.5 km/hr
c. 4.5 km/hr
d. None of these
ans: c. 4.5 km/hr
Q3. What is the speed of the current ?
a. 1.5 km/hr
b. 2.5 km/hr
c. 0.5 km/hr
d. None of these
ans: a. 1.5 km/hr
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