X can run a kilometer race in 4 1/2 min while Y can run same race in 5 min. How many meters start can X give Y in a kilometer race, so that the race mat end in a dead heat? Choose the most appropriate option.
A) 50 m B) 200 m C) 150 m D) 100 m E) 250 m
D   100 m   X can give Y (5 min - 4 1/2 min) = 30 sec start.   The distance covered by Y in 5 min = 1000 m.   Distance covered in 30 sec = (1000 * 30)/300= 
<gadget id="calculator">(1000 * 30)/300</gadget>
<output>100</output>
100 m.   X can give Y 100m start.
<result>D</result>
X can run a kilometer race in 4 1/2 min while Y can run same race in 5 min. How many meters start can X give Y in a kilometer race, so that the race mat end in a dead heat?