18 km/hr
23 km/hr
22 km/hr
28 km/hr
C. 22 km/hr
let the speed of the motorboat in still water be x kmph.then,
6/x+2 +6/x-2=33/60
11x2-240x-44=0
11x2-242x+2x-44=0
(x-22)(11x+2)=0
x=22.
2:1
3:1
3:2
4:3
1km/hr
2km/hr
3km/hr
4km/hr
4 km/hr
6 km/hr
8 km/hr
Data inadequate
2
3
4
5
3
5
8
9
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.
18 km/hr
23 km/hr
22 km/hr
28 km/hr
1 km/hr.
1.5 km/hr.
3.2 km/hr.
3.5 km/hr.
5 km/hr
4 km/hr
3 km/hr
1km/hr
1
2
2.5 km/hr
4.2 km/hr
5 km/hr
10.5 km/hr
2 km
3 km
4km
5km
40 minutes
1 hours
1 hr 15 min
1 hr 30 min
2:1
3:2
8:3
None of these