In a 1100 m race Usha beats Shiny by 50 m. In the same race, by what time margin Shiny beat Mercy who runs at 4 m/s ?
Answers:
A) 100 sec. B) 55 sec C) 25 sec D) Data not sufficient E) None of these
Speed of Shiny = 50/ 10= 
<gadget id="calculator">50/ 10</gadget>
<output>5</output>
5m/s   Time taken by shiny to complete the race is B= 1100/5= 
<gadget id="calculator">1100/5</gadget>
<output>220</output>
220 sec.   Time taken by Baley to complete the race is D= 1000/4 = 275 sec.   Hence, D-55 sec = 55 sec   ANSWER:55 sec
<result>B</result>
In a 1100 m race Usha beats Shiny by 50 m. In the same race, by what time margin Shiny beat Mercy who runs at 4 m/s ?