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 : 36

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

Shortcut »

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 : 37 [SSC CGL Tier-I 2010]

1.14 expressed as a per cent of 1.9 is

a) 60%

b) 90%

c) 6%

d) 10%

Shortcut »

Answer: (a)

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

Question : 38 [SSC CHSL 2012]

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

Shortcut »

Answer: (a)

Let the total number of employees be x.

x × $69/100$ = 20700

x = ${20700 × 100}/69$ = 30000

Question : 39

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

Shortcut »

Answer: (b)

${A × 90}/100 ={B × 30}/100$

3A = B

3A = $A × {2x}/100$

300 = 2x ⇒ x = 150

Question : 40 [SSC CPO S.I.2010]

0.001 is equivalent to

a) 0.01%

b) 0.1%

c) 10%

d) 1%

Shortcut »

Answer: (b)

0.1% = $0.1/100$ = 0.001

IMPORTANT quantitative aptitude EXERCISES

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