Infosys Percentages Questions and Answers Quiz – 1

Number of runs made by running = 110 - (3 x 4 + 8 x 6)

= 110 - (60)

= 50.

Required percentage = (50/110)*100 = 45 ( 5/11) %

Let their marks be (x + 9) and x.

Then, 100(x + 9)= 56 (x + 9 + x)

25(x + 9) = 14(2x + 9)

3x = 99

x = 33

So, their marks are 42 and 33.

let the no. of apple be x

x-x(40/100)=420

x-40x/100=420

or, 60x/100=420

x=42000/60

x= 700

X % of Y = (X/100 * y)

(y/100 * X)

Y % of X

therefore, A= B

20% of a = b
=> (20/100)a = b
therefore, b% of 20 = (b/100)*20
= (20a/100)*(1/100)*20
= 4a/100 = 4% of a.

5% of A + 4% of B = 2/3(6% of A + 8% of B)

5A/100+4B/100=2/3(6A/100+8B/100)

5A+4B=2/3(6A+8B)

15A+12B=12A+16B

3A=4B

A/B=4/3

A:B=4:3

Explanation:

(60/100) * 50 – (40/100) * 30
30 - 12 = 18

It looks like question assumes
Revenue= Consumption x tax amount per commodity

Let, commodity = 100, tax amount per commodity = 100
Revenue = 100 × 100 = 10000
new consumption = 100(100+15)/100= 115
New tax amount per commodity= 100(100 - 20)/100= 80
New revenue = 115 × 80 = 9200
Decrease in revenue = 10000 - 9200= 800
Percentage decrease in revenue =800x100/10000= 8%

Full marks =500 ,Then
A got 10℅less than b
A got 360
So
360*10/100
36
So
B got 360+36=396
Then
B got 25℅ more than c
So
B=396
396*25/100
99
So
C got 396-99=297
Then
C got 20℅ less than d
So100
got 297
So
297*20/100
59
D got 297+59=356
Then
D got 356
356/500*100
71.2 %