Answers

2015-05-05T14:51:26+05:30
Let B's contribution be x 
(3500 x 12)/ 7x  = 2/3 
500 x 12 = 2x / 3 
( 500 x 12 x 3 )/ 2 = x 
500 * 6 * 3 = x 
x = 9000
0