RBI OFFICER GRADE ‘B’ PHASE-I EXAM Held on:18.08.2018 (Part-III)

Let A's initial investment be Rs. $x$ and that of B be Rs. $y$.
According to the question,
$x+300+300+300=y+200+$ $200+200$
$\Rightarrow x+900=y+600$
$\Rightarrow x+300=y$ $\dots (i)$
Again
Ratio of the equivalent capitals of A and B for 1 month
$=X\times 12+300\times 9+300\times 6+$$300\times 3:(x+300)\times 12+200\times$9+200×6+200×3
$=12x+2700+1800+900:$$12x+3600+1800+1200+600$
$=12x+5400:12x+7200$
$=x+450:x+600$

⇒ 6x+2700=5x+3000
⇒ 6x−5x=3000−2700
⇒  x=Rs. 300 11

Let the initial investment of B be Rs. $x$.
Ratio of the equivalent capitals of A, B and C for 1 month $=899\times 12:x\times 8:2x\times 4$
$\approx 1350:x:x$
Sum of the terms of ratio
=2x+1350
$\therefore$ A's share

=3750
⇒2x=3750−1350=2400
$\therefore$ C's investment = Rs. 2400

Ratio of liquids A, B and C in vessel X
=100:100:50=2:2:1
In vessel Y,

Total quantity = 120 litres
$\therefore \text{Percentage of liquid-C}$

Case-I,
C.P. of article-A = Rs. $\mathbf{x}$
According to the question,

Case-II,
C.P. of article-B = Rs. $\mathbf{y}$
According to the question,

Required difference
= Rs. $(1700-900)=\text{Rs.}800$

Number of people who attended the cloth festival :
First day + Third day + Fourth day
$=75\%$ of 80000

Number of people who did shopping :
First day

Third day

Their sum $=4800+4800=9600$
Number of people who attended the cloth festival on day-3

Number of people who did shopping on day-1 and day-2

Number of people who attended
the cloth festival on day-2 and day-4
$=50\%$ of $80000=40000$
$\therefore \text{Required ratio}$
=12800:40000
$=128:400=8:25$

Number of people who did shopping in cloth festival :

=4800
Required answer =4800+8000 +4800=17600