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

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The following question based on percentage topic of quantitative aptitude

Questions : If 50% of (x – y) = 30% of (x + y), then what per cent of x is y?

(a) 40%

(b) 400%

(c) 25%

(d) 33$1/3$%

The correct answers to the above question in:

Answer: (c)

50% of (x – y) = 30% of (x + y)

$1/2(x - y) = 3/10(x + y)$

$x/2 - {3x}/10 = {3y}/10 + y/2$

${5x – 3x}/10 ={3y + 5y}/10$

$x/5 = {4y}/5$ ⇒ x = 4y

$y = x/4 (or) x/4 ×100% = 25x$

Obviously, y is 25% of x

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Read more simple percentage Based Quantitative Aptitude Questions and Answers

Question : 1

One-third of 1206 is what percent of 134 ?

a) 200%

b) 300%

c) 100%

d) 150%

Answer: (b)

$1/3 of 1206 = 1206 × 1/3 = 402$

Required percent = $402/134$ × 100 = 300%

Question : 2

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

Question : 3

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 : 4

A dozen pairs of socks quoted at Rs.180 are available at discount of 20%. How many pairs of socks can be bought for Rs.48?

a) 2 pairs

b) 5 pairs

c) 3 pairs

d) 4 pairs

Answer: (d)

Since S.P. of a dozen pairs of socks = ${180 × 80}/100$ = Rs.144

S.P. of 1 pair of socks = $144/12$ = Rs.12

No of pairs available for Rs.48 = $48/12$ = 4

Question : 5

$2/3$ is what percent of $1/3$ ?

a) 150%

b) 200%

c) 50%

d) 33$1/3$%

Answer: (b)

Let x % of $1/3 = 2/3$

x% = ${2×3}/3$=2⇒ x = 200%

Question : 6

What percent of 3.6 kg is 72 gms. ?

a) 12%

b) 2%

c) 32%

d) 22%

Answer: (b)

Required percentage = $72/{3.6 × 1000}$ × 100 = 2%

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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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