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 : If 90% of A = 30% of B and B = 2x% of A, then the value of x is

(a) 300

(b) 150

(c) 450

(d) 400

The correct answers to the above question in:

Answer: (b)

${A × 90}/100 ={B × 30}/100$

3A = B

3A = $A × {2x}/100$

300 = 2x ⇒ x = 150

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Read more simple percentage Based Quantitative Aptitude Questions and Answers

Question : 1

0.001 is equivalent to

a) 0.01%

b) 0.1%

c) 10%

d) 1%

Answer: (b)

0.1% = $0.1/100$ = 0.001

Question : 2

A student multiplied a number by $3/5$ instead of $5/3$ . What is the percentage error in the calculation ?

a) 54%

b) 64%

c) 44%

d) 34%

Answer: (b)

Let x be the multiplicand.

Error = $5/3x - 3/5x$

= $\text"25x – 9x"/15 =\text"16x"/15$

Percentage error = ${\text"16x"/15}/{5/3x}$ × 100

=$\text"16x"/15×3/\text"5x"$ ×100=64%

Question : 3

A team played 40 games in a season and won in 24 of them. What percent of games played did the team win?

a) 60%

b) 35%

c) 70%

d) 40%

Answer: (a)

Required percentage = $24/40 × 100$ = 60%

Question : 4

31% of employees pay tax in the year 2008. Non-tax paying employees are 20,700. The total number of employees is :

a) 30,000

b) 66,775

c) 31,160

d) 64,750

Answer: (a)

Let the total number of employees be x.

x × $69/100$ = 20700

x = ${20700 × 100}/69$ = 30000

Question : 5

1.14 expressed as a per cent of 1.9 is

a) 60%

b) 90%

c) 6%

d) 10%

Answer: (a)

Required percentage = $1.14/1.9 × 100$ = 60%

Question : 6

If 120% of a is equal to 80% of b, then $\text"b + a"/ \text"b - a"$ is equal to

a) 7

b) 8

c) 5

d) 6

Answer: (c)

a × $120/100 = b × 80/100$

$b/a = 120/80 = 3/2$

${b + a}/{b - a} = {b/a + 1}/{b/a - 1} = {3/2 + 1}/{3/2 - 1} = {5/2}/{1/2} = 5$

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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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