Alexander Fleming discovered penicillin in 1928. It was the first widely used antibiotic and revolutionized medicine.
A vehicle travels at a speed of 'u' km/hr. After 2.5 hours, it increases its speed to (u + 12) and travels for another 1.5 hours. If the ratio of the di...
Barry and Iris set off simultaneously from point A, aiming to reach point B. Barry travels faster than Iris, with their speeds being in a ratio of 5:3. ...
Speed of a car and a bus is 25 km/h and 15 km/h, respectively. If the time taken by the car to cover a distance of ‘8x’ km is 1 hour less than time ...
A man travelled a total distance of 250 km. He travelled first 100 km on car with a speed of 20 km/h and rest of the distance on bike whose speed is 10 ...
Two guns were fired from the same place at an interval of 20 minutes but a person in a train approaching the place hears the sound 16 minutes 30 seconds...
Two ladies simultaneously leave cities A and B connected by a straight road and travel towards each other. The first lady travels 3 km/hr fast...
Train M crosses a platform in 60 seconds and overtakes a man running in the opposite direction at 12 km/h in 30 seconds. Train N passes Train M, which i...
The distance between two points 'P' and 'Q' is 2,400 km. Karan and Mohit can cover the distance between 'P' and 'Q' in 40 hours and 32 hours, respective...
If a person walks 25% more than of his usual speed, reaches his distance 90 minutes before. If the destination is 495 km away, then the usual speed of a...
A,B and C run around a Circular track starting from the same point simultaneously and in the same direction at the speed of 16 kmph, 24 kmph and 32 kmph...
