A profit of Rs. 960 is divided between A and B in the ratio 1/3 : 1/5 . The difference of their profit is = ?

Answer: Option D

Total Profit = Rs. 960/-
A : B = $$\frac{1}{3}$$ : $$\frac{1}{5}$$   = 5 : 3
Profit share of A = $$\frac{5}{8}\times 960=600$$
Profit share of B = $$\frac{3}{8}\times 960=360$$
Difference of their profit = 600 - 360 = Rs. 240