The average age of three ladies is 30 years and their ages are in the ratio of 4: 6: 8. The age of the youngest lady is:
ATQ, Let's denote the ages of the three ladies as 4x,6x and 8x, where (x) is positive constant Then, the average age is given by the sum of ages divided by the number of people, 30 = (4x+6x+8x)/3 On solving for 'x', we get x= 5, Therefore age of the youngest lady is 4x = 4×5 = 20 yrs.
500 metres long train crosses a man who is moving in the same direction with a certain speed, in 50 seconds. If the same train can cross a tree in 20 se...
Karan and Varun started running in a straight line at 5 m/s and 7.5 m/s respectively. If Karan started 90 meters ahead of Varun, ...
A motorbike travelled for the first 180 km at a certain speed in 4 hours. After that, the speed of the motorbike decreased by 5 km/h. If the motorbike t...
A boy goes to school at 6 km/Hr and return at a speed of 5 km/hr. If he takes 11 hrs in all. Find the distance from his village to school?
The speed of two cars A and B are in the ratio of 8:11 respectively. Car A travels 18 km less than the car B in the same time duration. What was the dis...
A driver of an army truck sees an ambulance 80 meters ahead of him. After 10 seconds the ambulance is 70m behind. If the speed of the truck is 104kmph, ...
The speed of a bike increases by 3 km/hr after every 1 hour. If the distance travelled by the bike in 1st hour is 25 km, the find the total distance tra...
Anuj covered a distance of 188 km in 8 hours. He traveled part of the distance on a cycle at a speed of 15 km/hr and the remaining distance by walking a...
When the bus moves at 3/4 of its usual speed, it is 20 minutes late. What is its usual time to cover the journey?
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...
