Saved Bookmarks
| 1. |
A person can row a distance of one kilometre upstream in 10 min and downstream in four min. What is the speed of the stream? |
|
Answer» 1 KM in 10min or 1/6hr. So, speed here, is 6km/hr. 6km/hr = Vs-Vr ([email PROTECTED]) Vs- speed in still water. Vr- speed in moving water. So, SIMILARLY 4MIN or 1/15hr, 15km/hr = Vs+Vr ([email protected]) So. From ([email protected] and [email protected]) Vs=10.5km/hr. Vr=4.5km/hr. |
|