n a 1000m race, if A gives B a start of 40m, A wing by 19sec. But if A gives B start of 30sec, B wins by 40m.
Find the time taken by B to run 5000m race?	Choose the correct choice from the following options.
A) 300 B) 400 C) 500 D) 600 E) 750
then 960/B -1000/A = 19 =&gt; 24/B - 25/A = 19/40   and 1000/B - 960/A = 30 =&gt; 25/B - 24/A = 30/40   solving equation A speed =8 and B=20/3   for 1000m b will take 5000/20/3= 750 sec   #   750
<result>E</result>
n a 1000m race, if A gives B a start of 40m, A wing by 19sec. But if A gives B start of 30sec, B wins by 40m.
Find the time taken by B to run 5000m race?