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 x% of a is the same as y% of b, then z% of b will be

(a) ${xy}/z$% of a

(b) $y/z$% of a

(c) ${yz}/x$% of a

(d) ${zx}/y$% of a

The correct answers to the above question in:

Answer: (d)

${ax}/100 = {by}/100$

b = ${ax}/y$

z% of b = ${ax}/y × z/100$

= ${xz}/y$% of a

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Read more simple percentage Based Quantitative Aptitude Questions and Answers

Question : 1

30% of x is 72. The value of x is:

a) 480

b) 640

c) 216

d) 240

Answer: (d)

30% of x = 72

x = ${72 × 100}/30$ = 240

Question : 2

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 × $120/100 = b × 80/100$

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

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

Question : 3

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 : 4

What percent of 3.5 kg is 70 gms ?

a) 5%

b) 2%

c) 3%

d) 4%

Answer: (b)

Required percentage = $70/{3.5 × 1000} × 100$ = 2%

Question : 5

The population of a village is 25,000. One fifth are females and the rest are males. 5% of males and 40% of females are uneducated. What percentage on the whole are educated?

a) 55%

b) 85%

c) 75%

d) 88%

Answer: (d)

Males = 25000 × $4/5$ = 20000

Females = 5000

Educated males = 20000 × $95/100$ = 19000

Educated females = ${5000 × 60}/100$ = 3000

Total educated persons = 22000

Required percent = $22000/25000 × 100$ = 88%

Question : 6

Out of two numbers, 40% of the greater number is equal to 60% of the smaller. If the sum of the numbers is 150, then the greater number is

a) 90

b) 60

c) 70

d) 80

Answer: (a)

Let greater number be x.

Smaller number = 150 - x

According to the question,

${40 ×x}/100 = {60(150 - x)}/100$

2x = 3 × 150 - 3x

5x = 3 × 150

x = 90

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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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