RRB Assistant Loco Pilot and Technician Model Paper 9 with solutions

(c) Let the profit = x
Profit of A = $\frac{9\mathit{x}}{10}$, Remaining profit = $\frac{\mathit{x}}{10}$
Profit of B = $\frac{\mathit{x}}{20}$
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 rises3%
Investment of A = $\frac{270}{3}$ ×100 = 9000.
If investment of A, B and C = 18x, x and x 18x = 9000
x = 500
B’s investment = ₹ 500.
C’s investment = ₹ 500.