Boys: Girls = 7:6 Number of girls = 6/7×1960 = 1680 Let boys be added x. So, number of boys = 1960 + x According to the question, => (1960 + x)/1680 = 8/7 => 1960 + x = 1920 => x = 40
A runner completes a track in three segments. For the first 'v - 5' km, he runs at 15 km/h, for 'v' km at 25 km/h, and the last 'v + 5' km at 20 km/h. I...
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 ‘5x’ km is 1 hour less than time ...
A Bike has to cover a distance of 120 km in 15 hours. If it covers half of the journey in 3/5th of the time, the speed to cover the remaining distance i...
The average speed of a bus is half the speed of a train. The train covers 5200 km in 13 hours. How much distance will the bus cover in 36 minutes?
A and B are travelling towards each other with a speed of 10 km/hr and 20 km/hr. They started at same time and A covered 15 km less distance than B befo...
Train A takes 45 minutes more than train B to travel a distance of 450 km. Due to engine trouble speed of train B falls by a quarter, so it takes 30 min...
Howrah Express is scheduled to reach Howrah at 8:00 am, but due to the high number of trains the train couldn't get clearance for platform, and it got s...
Aman takes 36 minutes more than Sudhanshu to cover a distance of 130 km. If Aman doubles his speed, he takes 42 minutes less than Sudhanshu to cover the...
Ajay and Vishal left the place ‘X’ with different speeds which are in the ratio 7:6 respectively. Ajay left the place 36 seconds after Vishal. If af...
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 ...
