What is a variable?
Variables hold pieces of data temporarily. For example, a program might ask for a user's name when it first executes. The user name is temporarily stored as a variable and the program may refer back to that data until the user ends the program.
Train P starts from Lucknow to Dehradun at 11:55 am with an average speed of 55 m/s. Train Q starts from Dehradunto Lucknowat 1:35 pm with an average sp...
Ratio of speeds of ‘A’ and ‘B’ is 5:7, respectively. If they participate in a 350-metre race and ‘B’ gives ‘A’, a head start of ‘m’ ...
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 ‘9x’ km is 4 hour less than time ...
A car covers its journey at the speed of 80 km/hr in 10 hours. If the same distance is to be covered in 4 hours, by how much the speed of the car will h...
A man travels some distance at a speed of 36 km/hr and returns at a speed of 27 km/hr. If the total time taken by him is 2 hrs 20 min, the distance is
A driver of truck sees an ambulance 160 meters ahead of him. After 20 seconds the ambulance is 140 meters behind. If the speed of the truck is 80 kmp/h,...
A car can finish a certain journey in 10 hours at a speed of 42 kmph. In order to cover the same distance in 7 hours, the speed of the car (km/h) must b...
Rohan and Tanuj move towards Dehradun starting from Delhi at a speed of 30 km/h and 50 km/h respectively. If Tanuj reaches Dehradun 300 minutes earlier ...
X started to run from point ‘A’ to ‘B’ at a speed of 35 km/hr at 9:00 am and Y started to run from point ‘B’ to ‘A’ at a speed of 11 km/...
Determine the distance covered by the dog in 2 hours and 30 minutes if the dog's speed is 15 km/h faster than the cow's. The time it takes for the cow t...
