BANK & INSURANCE (DATA INTERPRETATION) PART 4

Number of female singers and dancers from state A
= 240 + 360 = 600
And, total number of dancers in state A = 660
Therefore, ratio = 600 : 660 = 10 : 11

Given, the number of employees working in company A who attended the conference = 112

Let the total number of employees who attended the conference be ‘t’

According to the question:
⇒ 20% of t = 112 ⇒ t/5 = 112
⇒ t = 112 × 5 = 560

Hence, total number of employees who attended the conference = 560

Number of employees working in company D who attended the conference = (3/8) × 560 = 210

Number of employees working in company B who attended the conference = (4/5) × 210 = 168

Total number of employees working in company C and E together who attended the meeting
= 560 - (112 + 168 + 210)
= (560 - 490) = 70

Ratio of the number of employees working in company C to the number of employees working in company E who attended the conference = 4 : 3

Hence, number of employees working in company C who attended the conference = (4/7) × 70 = 40

And number of employees working in company E who attended the conference = 70 - 40 = 30

Company | Number of employees who attended the conference
A → 112
B → 168
C → 40
D → 210
E → 30

Required percentage = {(168 - 40)/40} × 100 = 320%

Let the number of candidates who learn only guitar = a
Let the number of candidates who learn only flute = c
Let the number of candidates who learn both instruments = b

a + b + c = 1200 ----(1)

a + c = 70/100 × 1200 = 840 ----(2)

So, b = 1200 - 840 = 360

a : c = 7/9 × 360 = 280 ----(3)

Solving equation (2), and (3), we get
a = 560, and c = 280

Number of candidates who learn only flute = 280
Number of candidates who learn both flute and Guitar = 360
Required percentage = (360 - 280)/360 × 100
= 22.22%