Question
A boat covers a distance of 96 km downstream in 4 hours
and returns upstream in 6 hours. Find the speed of the stream.Solution
Downstream speed = 96 / 4 = 24 km/h Upstream speed = 96 / 6 = 16 km/h Speed of stream = (Downstream speed - Upstream speed) / 2 Speed of stream = (24 - 16) / 2 = 8 / 2 = 4 km/h Correct Option: d) 4 km/h
Vicky and Vikram start running simultaneously around a rectangular track of length 840m from the same point at speeds of 40 km/hr and 32 km/hr. When wil...
The speed of ‘A’ and ‘B’ is 60 km/hr and 30 km/hr, respectively. If the distance covered by ‘A’ in ‘x’ hours is 240 km more than that by...
A man walks 4 km at a speed of 2 kmph, runs 6 km at a speed of 2 kmph and goes by bus another 32 km. Speed of the bus is 8 kmph. Find the average speed ...
Amit walks for 2 hours at a speed of 's' km/hr, and then his speed increases by 25 km/hr, covering the remaining distance in 3 hours. If Amit's speed ha...
The ratio of the speed of a train to a bus is 7:5 and the bus covers 24 km less than the train in the same time duration. If the time taken by the train...
A man travelled a distance of 47 km in 6 hours. He travelled panly on foot at a speed of 6(1/2) km/h and the rest on bicycle at a speed of 8(1/2)km/h. T...
A man running with the speed of 40 km/hr covers a certain distance in ‘x’ hours. If the same distance can be travelled with a speed of 60 km/h in (x...
Speed of a car and a bus is 30 km/h and 6 km/h, respectively. If the time taken by the car to cover a distance of ‘10x’ km is 2 hour less than time ...
A train covers a certain distance at a speed of 48 km/h and the next same distance with a speed of 60 km/h and the next same distance with a speed of 80...
A cheetah spotted a fox running away at 6 m/s and started chasing it at 10 m/s. The fox was 120 metres ahead at that moment. Find the time taken by the ...
