ATQ, Let the present age of ‘Akash’ be ‘7a’ years So, present age of ‘karan’ = ‘9a’ years And, present age of ‘Chetna’ = (9a/3) × 5 = ‘15a’ years According to the question, 7a + 9a + 15a = 3 × 62 Or, 31a = 186 Or, a = 6 Required difference = 15a – 9a = 6a = 36 years
A train 300 metre long takes 30 sec to cross a man running at a speed of 6 km/hr in the direction opposite to that of train. What is the speed of the tr...
A train travelling with a speed of 54 km/h can cross a pole in 6 seconds. Find the time taken by the train to cross a 210 metres long platform if the sp...
There are two trains A and B. A start from point X at 5 AM towards point Y. Another train B starts at 7 AM from point Y. If they meet at 9 AM and speed ...
Two trains of equal lengths take 20 seconds and 30 seconds respectively to cross a telegraph post. If the length of each train be 240 metres, in what ti...
A person sees a train passing over 2 km long bridge. The length of the train is half that of bridge if the train clears the bridge in 6 mins. What is th...
A train started from station P and preceded towards station Q at a speed of 72 km/h. 45 minutes later, another train started from station Q and preceded...
How many seconds will a train 60 m in length, travelling at the rate of 40 km an hour, take to pass another train 80 m long, proceeding in the same dire...
A freight train requires 17.6 seconds to pass a stationary person and 28 seconds to traverse a 260-meter-long tunnel. Simultaneously, a motorcycle can c...
A train takes to cross a man standing on a platform and a 360m long bridge 12 sec and 30 sec respectively. How long will it take to cross a 220m long pl...
Two trains A and B, were proceeding in the same direction on parallel tracks at 23 km/hr and 77 km/hr respectively. A man noticed that it took exactly 1...