In a 1300 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 ?  Choose the correct choice.
A) 65 sec.	B) 50 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= 1300/5= 
<gadget id="calculator">1300/5</gadget>
<output>260</output>
260 sec.   Time taken by Baley to complete the race is D= 1300/4= 
<gadget id="calculator">1300/4</gadget>
<output>325</output>
325 sec.   Hence, D-B= 65 sec   65 sec.NSWER:65 sec.
<result>A</result>
In a 1300 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 ?