In 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by:	Choices: A) 10 B) 12 C) 30 D) 40 E) 20
Dist = (100/45*9)= 
<gadget id="calculator">(100/45*9)</gadget>
<output>20</output>
20 m   ANSW20R 20
<result>E</result>
In 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by: