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Time Distance and Speed
Anshu and Banke start from Basant pur towards Basantvihar in car and auto respectively. While Chanchal started from Basantvihar towards Basantpur in motor cycle. All of them started at 12:00 noon and the speed ratio of Anshu, Banke and Chanchal are in the ratio 5 : 3 : 4, and Anshu meets Chanchal after exactly1 hour of their start. At what time will Anshu and Banke reach Basantvihar.
1:48 pm and 3:00 pm
1:45 pm and 2:55 pm
2 pm and 3:30 pm
1:30 pm and 2:48 pm
None of these
Read Solution (Total 6)
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- speeds are 5/12, 3/12,4/12(assume), 12x/5=60min; x=25 and 12z/4=60 min; z=20 so x+z=total distance= 20+25=45; now anshu time=45/speed=45*12/5= 108 min=1 hour 48 min and banke time=45*12/3=180 min= 3 hours so option 1
- 10 years agoHelpfull: Yes(19) No(1)
- speed ratio is 5:3:4
so,lets assume their speed is 5x,3x and 4x in 1 hour respectively.
so,total distance 5x+4x=9x as after 1 hour anshu and chanchal meets with each other.
so,remaining 4x distance will be covered by anshu in 4/5 hours or 48 mins.
and total 9x distance is covered by banke in 9/3=3 hours
anshu will reach at 12+1h 48 min=1:48,and banke will reach at 12+3=3 pm.
ans.--option a) - 10 years agoHelpfull: Yes(15) No(1)
- sorry 1st option 1:45 and 3 guys k
- 10 years agoHelpfull: Yes(3) No(1)
- hopefully 2-3:30
bcoz,let us assume the distance is ykm;time=dis/speed;1=y/9(relative speed)
hence,y=9km; banke takes 3hr to go basantvihar.......(12-1-2-3) so exactly at 3 they both will reach - 10 years agoHelpfull: Yes(1) No(2)
- option a is right.
- 10 years agoHelpfull: Yes(1) No(0)
- As we know ,
Speed downstream = (u + v) km/hr.
Speed upstream = (u - v) km/hr.
so x-.5=2 => x=2.5
& y-.5=3.33 => y=2.83
Ans: 2.83-2.5=.33 - 10 years agoHelpfull: Yes(0) No(0)
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