Solution:Investment of A = 13200
Investment of B = 16800
Profit earned by A = 880
Profit earned by B = 880 + 220 = 1100
Then, profit ratio = 880 : 1100 = 4 : 5
Also, profit ratio, A : B = (13200 × period of investment of A) : (16800 × period of investment of B)
Then, 4 : 5 = (13200 × period of investment of A) : (16800 × period of investment of B)
Period of investment of A : period of investment of B = 56 : 55