model 1 simple percentage questions Section-Wise Topic Notes With Detailed Explanation And Example Questions

MOST IMPORTANT quantitative aptitude - 11 EXERCISES

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The following question based on percentage topic of quantitative aptitude

Questions : 2 is what percent of 50?

(a) 4

(b) 5

(c) 2

(d) 2.5

The correct answers to the above question in:

Answer: (a)

Let 2 be x% of 50

x% of 50 = 2

$x/100$× 50 = 2⇒ $x/2$ = 2

x = 4

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Read more simple percentage Based Quantitative Aptitude Questions and Answers

Question : 1

A box has 100 blue balls, 50 red balls, 50 black balls. 25% of blue balls and 50% of red balls are taken away. Percentage of black balls at present is

a) 33$1/3$%

b) 40%

c) 50%

d) 25%

Answer: (a)

After taking away respective balls,

Number of balls in the box = 75 + 25 + 50 = 150

Percentage of black balls = $50/150 × 100$

=$100/3 = 33{1}/3$%

Question : 2

32 is what per cent of 80 ?

a) 36%

b) 40%

c) 24%

d) 25.6%

Answer: (b)

Required percentage = $32/80$ × 100 = 40%

Question : 3

If 20% of A = 50% of B, then what per cent of A is B ?

a) 25%

b) 15%

c) 30%

d) 40%

Answer: (d)

20% of A = 50% of B

2A = 5B ⇒ A = ${5B}/2$

Let B is x % of A.

${5B}/2 × x/100$= B

x = $200/5$ = 40%

Question : 4

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

Answer: (b)

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

= 60 – 24 = 36

Question : 5

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

Answer: (a)

According to question,

A×$80/100 = B×50/100$

= B= ${A × 80}/50$ = 1.6A

B = 160% of A

x = 160

Question : 6

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

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

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GET percentage PRACTICE TEST 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
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