IBPS Government Jobs Exams Numerical Ability Boats and Streams

It takes the same time to go 20 km downstream as it takes to go 12 km upstream. If the speed of the boat used is 8 km/hr in still water, the speed of the stream (in km/hr) is:
option
(1) 4
(2) 1
(3) 0
(4) 3
(5) 2

Read Solution (Total 1)

let, speed of stream be x km/hr
so,
20/(8+x) = 12/(8-x) --> x= 2km/hr
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IBPS Other Question

At 7 : 55 a.m. a police jeep started chasing a stolen carrunning at 85 km/hr ahead of it by 5 km. At what time will the police jeepovertake the stolen car, if its speed is 100 km/hr?
(1) 8 : 30 a.m.
(2) 8 : 20 a.m.
(3) 8 : 25 a.m.
(4) 8 : 15 a.m.
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option
(1) 15, 8
(2) 30, 16
(3) 45, 24
(4) 60, 32
(5) 75, 40