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Let the capacity of the tank be ‘30’ litres {LCM (15, 30)} Efficiency of pipe ‘A’ = (30/15) = 2 litres/minute Efficiency of pipe ‘B’ = (30/30) = 1 litres/minute Quantity of water filled by pipe ‘A’ in 13 minutes = 13 × 2 = 26 litres Quantity of water to be filled = 30 – 26 = 4 litres Time taken by pipe ‘A’ and ‘B’ together to fill 4 litres of water = {4/(2 – 1)} = 4 minutes Total time taken = 13 + 4 = 17 minutes
A train travels at an average speed of 75 km per hour without stoppage and with stoppages it covers the same distance at an average speed of 55 km/hr. H...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 25 km/hr and 15 km/hr, respectively. If the distance covered by ‘A�...
Two trains starts at the same time from Spain and France towards each other with a speed of 160km/hr and 190 km/hr. When they meet, the faster train cov...
A car covers a certain distance at the speed of 30 km/h and comes back at the speed of 20 km/h. What is the average speed of the car for the entire jour...
A man travelled a total distance of 300 km. He travelled first 200 km on car with a speed of 40 km/h and rest of the distance on bike whose speed is 20 ...
The speed of two cars A and B are in the ratio of 14:19 respectively. Car A travels 15 km less than the car B in the same time duration. What was the di...
Neha and Riya start together from point P to point Q. The ratio of their speeds is 4:3. If Riya takes 30 minutes more than Neha to reach point Q, find t...
Speed of a car and a bus is 20 km/h and 12 km/h, respectively. If the time taken by the car to cover a distance of ‘8x’ km is 1 hour less than time ...
A person travels 30 km at a speed of 15 km/h, another 20 km at 10 km/h, and the final 50 km at 25 km/h. What is the average speed for the entire journey?
A Truck is running at a speed of 72 km/ph. What distance will it cover in 15 seconds?