Rs.3600 is distributed between A, B, and C in the proportions 3 : 4 : 5 . The difference of share of A &  C is ?

660 800 1800 1240

800

Ratio of     A    :     B     :    C                  3   :     4     :    5  ( 3R + 4R + 5R ) = 12R 12R = 3600   (given)  1R = 400  Difference of  of A & C = 5R - 3R = 2R  2R = 2 × 400 = 800