Let the speed of boat in still water be x km/hr. According to the question, => x + 4 + x − 4 = 48 => x = 24 Downstream speed = 4 + 24 = 28 km/hr Required time = 84/28 = 3 hrs
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 ...
Train ‘A’ running at a speed of 19.8 km/hr. can cross a standing goods train 4 times its length in 40 seconds. Find the time taken by 300 meters lon...
Speed of a car and a bus is 20 km/h and 10 km/h, respectively. If the time taken by the car to cover a distance of ‘8x’ km is 1 hour less than time ...
Two motorcycles, a Honda and a Hero, set off simultaneously from the same location, aiming for the same endpoint. The Honda travels at a speed of 48 km/...
If 6 women can complete a work in 3 days, and 9 girls can complete the same work in 2 days, then find the time taken to complete the same work by 8 wome...
The ratio of the speed of 'B' to that of 'C' is 1:2. 'B' covers 'I' km in 9 hours and 'C' covers (I + 90) km in 6 hours. Find the time taken by 'D', who...
A train that is 120 m in length runs at 90 km/h. How much time will the train take to cross a bridge that is 180 m in length?
A car travels from point A to point B in 4 hours, covering a distance of 180 km. On the return journey, the speed is reduced by 20%. How much time does ...
A train takes 30 minutes to travel 20 km, but due to maintenance, its speed is reduced by 25% for the next 10 km. Find the total time taken by the train...
Find the distance travelled (in km) by the truck to reach point B from point A, if a car cover 25% the same distance in 2 hours and a truck covers 30%...
