C = 2/5 : 3/4 : 5/8 = 16 : 30 : 25LET capital of A, B and C are 16x, 30x and 25X respectively.Capital of A at the end of the year = 16x × 4 + 24x × 8 = 64x + 192x = 256xCapital of B at the end of the year = 30x × 4 + 24x × 8 = 120x + 192x = 312xCapital of C at the end of the year = 25x × 12 = 300xCapital ratio of A, B and C at the end of the year = 256x : 312x : 300x = 64x : 78x : 75xAccording to the question64x + 78x + 75x = 282100217x = 282100x = 282100/217 = 1300Profit SHARE of B at the end of the year = 78x = 78 × 1300 = 101400