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CBSE Class 10 Answered

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 | 15 Jan, 2014, 05:00: PM
answered-by-expert 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 | 16 Jan, 2014, 10:53: AM

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