2 km
3 km
4km
5km
B. 3 km
Speed downstream =(7.5+1.5)km/hr=9 km/hr;
Speed upstream=(7.5-1.5)kmph=6kmph.
Let the required distance be x km.then,
x/9+x/6=50/60.
2x+3x=(5/6*18)
5x=15
x=3.
Hence, the required distance is 3km.
2 km
3 km
4km
5km
a man can row 18 kmph in still water.it takes him thrice as long to row up as to row down the river. Find the rate of stream.
6 km/hr.
7 km/hr.
8 km/hr.
9 km/hr.
2.5 km/hr
4.2 km/hr
5 km/hr
10.5 km/hr
1
2
1km/hr
2km/hr
3km/hr
4km/hr
2
3
4
5
2:1
3:2
8:3
None of these
4 km/hr
6 km/hr
8 km/hr
Data inadequate
2:1
3:1
3:2
4:3
1 km/hr.
1.5 km/hr.
3.2 km/hr.
3.5 km/hr.
3
5
8
9
40 minutes
1 hours
1 hr 15 min
1 hr 30 min
5 km/hr
4 km/hr
3 km/hr
1km/hr
18 km/hr
23 km/hr
22 km/hr
28 km/hr