model 1 simple percentage questions Practice Questions Answers Test with Solutions & More Shortcuts

percentage PRACTICE TEST [11 - EXERCISES]

model 1 simple percentage questions

model 2 net increase or decrease in %

model 3 reducing & exceeding prices

model 4 x & y comparison

model 5 income & expenditure

model 6 consumption & remaining

model 7 marks scored in examinations

Model 8 population based

model 9 voters & election

model 10 percentage with allegations & mixture

model 11 percentage with ratios

percentage Important Formulas, Rules, Concepts & Shortcuts

Question : 11 [SSC CPO S.I 2006]

If three-fifth of sixty per cent of a number is 36, the number is

a) 75

b) 90

c) 100

d) 80

Shortcut »

Answer: (c)

Let the number be x.

$3/5 × 60/100 × x = 36$

$x = {36 × 5 × 5}/{3 × 3}$ = 100

Question : 12 [SSC CAPFs SI 2013]

If 50% of (P – Q) = 30% of (P + Q) and Q = x% of P, then the value of x is :

a) 20

b) 50

c) 30

d) 25

Shortcut »

Answer: (d)

${P – Q}/2 = (P + Q) × 30/100$

5(P - Q) = (P + Q) × 3

5P - 3P = 5Q + 3Q

2P = 8Q

P = 4Q = 4 × ${P × x}/100$

${4x}/100$= 1 ⇒ x = 25

Question : 13

If 80% of A = 50% of B and B = x% of A, then the value of x is :

a) 160

b) 150

c) 400

d) 300

Shortcut »

Answer: (a)

According to question,

A×$80/100 = B×50/100$

= B= ${A × 80}/50$ = 1.6A

B = 160% of A

x = 160

Question : 14

What is to be added to 15% of 160 so that the sum may be equal to 25% of 240 ?

a) 60

b) 36

c) 24

d) 84

Shortcut »

Answer: (b)

Required number = ${240 × 25}/100 - {160 × 15}/100$

= 60 – 24 = 36

Question : 15

2 is what percent of 50?

a) 4

b) 5

c) 2

d) 2.5

Shortcut »

Answer: (a)

Let 2 be x% of 50

x% of 50 = 2

$x/100$× 50 = 2⇒ $x/2$ = 2

x = 4

IMPORTANT quantitative aptitude EXERCISES

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