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Let the fourth proportion be x. Then, => 2 : 5 :: 12 : x => 2x = 5 × 12 => x = (5 × 12)/2 = 30
A biker travels first half of his journey with a speed of 18 km/h and the other half with a speed of 'x' km/h. If the total distance traveled by him is ...
Two trains, A and B, start from two stations 240 km apart at the same time. Train A travels at 60 km/h and Train B travels at 40 km/h. After how much ti...
The distance between two stations A and B is 900 km. A train starts from A and moves towards B at an average speed of 30 km/hr. Another train starts fr...
A man is travelling at a speed of 60 km/h such that he will take 90 minutes to reach his destination. But after completing half the journey, the man too...
In a 1000-metre race, 'Ravi' beats 'Shyam' by '200' metres and 'Raj' by '300' metres. If 'Shyam' and 'Raj' participate in a 400-metre race, and 'Raj' ge...
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?
Identify the cases where two objects moving in opposite directions have a relative speed of 30 km/h.
A car travels at a speed that is 30 km/h faster than a bike's speed. The bike covers a distance of 750 km in 15 hours. Calculate the time it takes for ...
A train is travelling at the rate of 45 km/hr. How many seconds it will take to cover a distance of 5/8 km?
Before servicing, a car runs at a speed of 50 km/hr while after servicing, it runs at a speed of 60 km/h. After servicing the car covers a certain dista...
