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Questions(147)
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a person travelled a part of distance at 90 km/hr by train and the remaining by bus at 40 km/hr. If he travelled the total distance of 350 km in 5 hours, find the distance he travelled by bus.
A person shooting a target,which is 465 m away hears the bullet strike it 4.5 after he fires. A spectator equidistant from shooting point and target(but out of the line of danger), hears the bullet strike 3 s after he hears the sound of the gun. Find the speed of the sound?
A man travels by scooter at 60 km/hr for 10 min. He walks for another 10 min at the rate of 4 km/hr. Find his average speed during 20 min journey.
Two trains $x$ and $y$ start from Delhi and Ranchi towards Ranchi and Delhi respectively. After passing each other they take 6 hours 40 minutes and 3 hours 45 minutes to reach Ranchi and Delhi respectively. If the train from Delhi is moving at 60 km/hr then find the speed of the train from Ranchi.
a bike reached VNS from ALLD in 35 min with average speed of 69 km per hour. if the average speed is increased by 36km per hour, how much will it take to cover the same distance?
A covers 1/3rd of his journey at the speed of 10km/hr and half of the rest of the journey at the speed of 20 km/hr and rest at the speed of 30km/hr. What is the average speed of A?