The ratio of the present ages of Ginni and Binni is 7:3 respectively. Ginni is ‘n’ years older than Binni. If after 5 years, the ratio of the ages of Binni to Ginni is 1:2, then find the value of √ (n+5).
Let the present ages of Ginni and Binni be 7x and 3x respectively. Here, n = 7x – 3x = 4x According to the question, => (7x + 5)/(3x + 5) = 2/1 => x = 5 Now, n = 4x = 20 Required value = √(n+5) = √(20+5) = √25 = 5
A man travels some distance at a speed of 20 km/hr and returns at a speed of 15 km/hr. If the total time taken by him is 2 hrs 20 min, the distance is
Train P starts from Lucknow to Dehradun at 11:55 am with an average speed of 45 m/s. Train Q starts from Dehradunto Lucknowat 1:35 pm with an average sp...
What is the length of the bridge which a man riding 21 km an hour can cross in 3 min.?
Average speed of ‘A’ during a 24-hour journey is 36 km/h. If he covered the first 150 km of his journey at a speed of 15 km/h, then find the speed a...
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...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 20 km/hr and 15 km/hr, respectively. If the di...
A 200-meter long truck is traveling at a speed of 180 km/hr, and it takes 10 seconds to cross a toll plaza. Now, if another truck, which is 180 meters s...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 23 km/hr and 24 km/hr, respectively. If the di...
Before servicing, a car runs at a speed of 26 km/hr while after servicing, it runs at a speed of 52 km/h. After servicing the car covers a certain dista...
A train covers a certain distance at a speed of 20 km/h and the next same distance with a speed of 35 km/h and the next same distance with a speed of 60...
