In a 200 metres race A beats B by 35 m or 7 seconds. A's time over the course is: Choose the correct option:
A) 40 sec
B) 47 sec
C) 33 sec
D) 35 sec
E) None of these
speed of B=s2.   A's time of course=t.   200=s2*(t+7) ---(eq 1)   200-35=s2*t ---(eq 2)   from these 2 eqs, we get t=33sec.   ANSWER:33 sec
<result>C</result>
In a 200 metres race A beats B by 35 m or 7 seconds. A's time over the course is: