1 km/hr.
1.5 km/hr.
3.2 km/hr.
3.5 km/hr.
B. 1.5 km/hr.
Rate in still water=1/2(10+7)km/hr=8.5 km/hr.
Rate of current=1/2(10-7)km/hr=1.5 km/hr.
18 km/hr
23 km/hr
22 km/hr
28 km/hr
5 km/hr
4 km/hr
3 km/hr
1km/hr
2
3
4
5
3
5
8
9
2 km
3 km
4km
5km
1
2
2:1
3:2
8:3
None of these
4 km/hr
6 km/hr
8 km/hr
Data inadequate
40 minutes
1 hours
1 hr 15 min
1 hr 30 min
1 km/hr.
1.5 km/hr.
3.2 km/hr.
3.5 km/hr.
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.
1km/hr
2km/hr
3km/hr
4km/hr
2.5 km/hr
4.2 km/hr
5 km/hr
10.5 km/hr
2:1
3:1
3:2
4:3