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A and B ran a race of 480 m. In the first heat, A gives B a head start of 48 m and beats him by 1/10th of a minute. In the second heat, A gives B a head start of 144 m and is beaten by 1/30th of a minute. What is B's speed in m/s?

Asked by Wasim Zainuddin H Sakharkar 15th January 2014, 5:00 PM
Answered by Expert
Answer:
Let Speed of B be x m/s 480-48/(x)-6=480-144/(x)-2 after solving equation we get x=12 m/s
Answered by Expert 16th January 2014, 10:53 AM
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