RRB NTPC Mains or Stage 2 Model Paper 9 with solutions

(c) Let the profit = x
Profit of $\mathit{A}=\frac{9\mathit{x}}{10}$, Remaining profit$=\frac{\mathit{x}}{10}$
Profit of B$=\mathit{x}20$
Profit of C$=\frac{\mathit{X}}{20}$
Ratio of profit$=\frac{9}{10}:\frac{1}{20}:\frac{1}{20}$
= 18 : 1 : 1
A’s income is increased by ₹ 270 . When profit rises 3%
Investment of $\mathit{A}=\frac{270}{3}\times$
If investment of A, B and C = 18x, x and x 18x = 9000
x = 500
B’s investment =₹ 500.
C’s investment =₹ 500.