In a 100 m race, A runs at 8km per hour. If A gives B a start of 7 m and still him by 15 seconds, what is the speed of B ?	Choose the correct choice from the following choices
A) 5.58 km/hr.	B) 5.06 km/hr.	C) 5.76 km/hr.	D) 6.76 km/hr.	E) 5.72 km/hr.
Time taken by A to cover 100 m =(60 X 60 / 8000)	x 100 sec = 45 sec.   B covers (100 - 7)= 
<gadget id="calculator">(100 - 7)</gadget>
<output>93</output>
93 m in (45 + 15)= 
<gadget id="calculator">(45 + 15)</gadget>
<output>60</output>
60 sec.   B's speed= (93 x 60 x 60)/(60 x 1000)km/hr = 5.58 km/hr.   5.58 km/hr.nswer is 5.58 km/hr.
<result>A</result>
In a 100 m race, A runs at 8km per hour. If A gives B a start of 7 m and still him by 15 seconds, what is the speed of B ?