In a 280 meters race A beats B by 56 m or 7 seconds. A's time over the course is: Choose the correct choice from the following answers:	A) 22 seconds	B) 12 seconds	C) 10 seconds	D) 18 seconds	E) 28 seconds
B runs 56 m in 7 sec.   =&gt; B runs 280 m in 7/56*280= 
<gadget id="calculator">7/56*280</gadget>
<output>35</output>
35 seconds   Since A beats B by 7 seconds, A runs 280 m in (35-7)= 
<gadget id="calculator">(35-7)</gadget>
<output>28</output>
28 seconds   Hence, A's time over the course= 28 seconds   ANSW28 secondsR:28 seconds
<result>E</result>
In a 280 meters race A beats B by 56 m or 7 seconds. A's time over the course is: