A runs twice as fast as B and gives B a start of 83m.How long should the racecourse be so that A and B might reach in the same time? Choose the correct option
A) 75 m. B) 80 m. C) 150 m. D) 100 m. E) None of the above
ratio of speeds of a and b is 2:1   b is 83m away from a but we know that a covers 1 meter(2-1) more in every second than b   the time taken for a to cover 83m is   83/1= 
<gadget id="calculator">  83/1</gadget>
<output>83</output>
83m   so the total time taken by a and b to reach=2*83= 
<gadget id="calculator">2*83</gadget>
<output>166</output>
166m   ANSWNone of the aboveR:None of the above
<result>E</result>
A runs twice as fast as B and gives B a start of 83m.How long should the racecourse be so that A and B might reach in the same time?