IBM
Company
Numerical Ability
Time Distance and Speed
A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
A. 40 minutes B. 1 hour
C. 1 hr 15 min D. 1 hr 30 min
Read Solution (Total 27)
-
- upstream speed = 2km/h
downstream speed = 6km/h
speed in still water = 1/2(6+2) = 4km/h
so to cover 5 km 75 minutes or 1h15m requires. - 9 years agoHelpfull: Yes(15) No(0)
- 2km in 1hr=2km/hr
1 km in 10 minutes means [1/10]*60=6km/hr
speed in still water is=1/2(6+2)=4km/hr
Required time=[5/4]hrs means 1hr 15 minutes
- 9 years agoHelpfull: Yes(7) No(0)
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- 9 years agoHelpfull: Yes(1) No(0)
- up stream=2 km/hr
down stream=6 km/hr
speed of still in water=1/2(2+6)=4 km/hr
Required time=5/4
=1 1/5 hr - 9 years agoHelpfull: Yes(1) No(0)
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nagalakshmi.kurakula@gmail.com
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IBM Other Question
41.45 ,41.5 ,42 ,18.23 ,18.2 ,18,_______
Find the term next in series
1)41.45,41.5,42,18.23,18.2,18,......(73.09) 2)6,9,11,13,17,20,22,24,28....(27) 3)2^11,1024.2^9,256,2^7,.....(64) 4)7,19,43,91,187..........(379) 5)7/6,3/2,1,5/6,13/6,2,1/2.........(??) 6)1,2,3,5,7,10,13,17...........(21) 7)12,13,14,12,13,13,12,13,12,13,13........(11) 8)-23,-16,18,14,-52,-45,37,33,-65..................(58) 9)0.3,0.6,1.6,3.2,5.2,10.4,13.4,26.8.............(30.8). 10).00005,.001,.02,.4.....(800) 11)4,3,7,14,13,22,21...........(17) 12)1.386,1.39,1.4,1,3.823,3.82,3.8,4,4.277.....(4.28) 13)8,27,64,125,216,..........(343) 14)13,14,15,16,18,19,20,22,23.....(24) 15)2,8,3,27,4,64....(5)