Sahil can row 3 km against the stream in 20 minutes and he can return in 18 minutes. What is rate of current ?
1/2 km/hr
1/3 km/hr
2 km/hr
4 km/hr
Explanation:
Speed Upstream=3/(20/60)=9km/hrSpeed
Downstream=3(18/60)=10km/hr
Rate of current will be (10−9)/2=1/2km/hr
Speed Upstream=3/(20/60)=9km/hrSpeed
Downstream=3(18/60)=10km/hr
Rate of current will be (10−9)/2=1/2km/hr