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. Two people started simultaneously towards each other from Siliguri and Darjeeling, which are 6060 km apart. They met 5 hours later. After their meeting, the first person, who traveled from Siliguri to Darjeeling, decreased his speed by 1.5 km/h and the other person, who traveled from Darjeeling to Siliguri, increased his speed by 1.5 km/h. The first person is known to arrive at Darjeeling 2.5 hours earlier than the second person arrived at Siliguri. Find the in5itial speed of the first person.

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Important Questions on Time, Speed and Distance

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The Sinhagad Express left Pune at noon sharp. Two hours later, the Deccan Queen started from Pune in the same direction. The Deccan Queen overtook the Sinhagad Express at 8 p.m.. Find the average speed of the two trains over this journey if the sum of their average speeds is 70 km/hr.
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Walking at 3/4 of his normal speed, Abhishek is 16 minutes late in reaching his office. The usual time taken by him to cover the distance between his home and his office is
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 Ram and Bharat travel the same distance at the rate.of 6 km per hour and 10 km per hour respectively.If Ram takes 30 minutes longer than Bharat, the distance travelled by each is
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 Alok walks to a viewpoint and returns to the start- ing point by his car and thus takes a total time of 6 hours 45 minutes. He would have gained  2 hours  by driving both ways. How long would it have taken for him to walk both ways?
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Sambhu beats Kalu by 30 metres or 10 seconds How much time was taken by Sambhu to complete a race 1200 meters.
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Two ships sail in a fog towards each other with the same speed. When they are 4 km apart, the captains decelerate the engines for 4 minutes with a deceleration rate of 0.1 m/s2, and then the ships continue sailing with the speeds attained. For what range of values of the initial speed will the ships avoid collision?

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A cyclist left point A for point B and travelled at the constant speed of 25km/h. When he covered the distance of 8.33 km, he was overtaken by a car that left point A twelve minutes after the cyclist and travelled at a constant speed too. When the cyclist travelled another 30 km, he encountered the car re- turning from B. Assume that the car did not stop at point B. Find the distance between A and B.
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Amit and Bimal start running around a circular track of circumference 4200 metres. Their respective speeds are 15 m/s and 3 m/s. Their 14th meeting occurs at point P and their 22nd meeting occurs at the point Q. Find the longer distance (along the circumference) between Points P and Q.