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
Question : 6 [SSC CHSL 2011]
If 20% of (A + B) = 50% of B, then value of $\text"2A - B"/ \text"2A + B"$ is
a) $1/4$
b) 1
c) $1/2$
d) $1/3$
Answer »Answer: (c)
(A + B) × $20/100 = B × 50/100$
${A + B}/ 5 = B/2$
2A + 2B = 5B
2A = 3B
${2A}/B$ = 3 or 2A = 3B
${2A - B}/{2A + B} = {2{A/B} - 1}/{2{A/B} + 1} = {3 - 1}/{3 + 1}$
= $2/4 = 1/2 = {3B - B}/{3B + B} = {2B}/{4B}$
Question : 7
If 125% of x is 100, then x is :
a) 400
b) 125
c) 80
d) 150
Answer »Answer: (c)
$x × 125/100 = 100$
$x = {100 × 100}/125 = 80$
Question : 8 [SSC CGL Prelim 2002]
If 50 % of P = 25% of Q, then P = x% of Q. Find x.
a) 50
b) 0.005
c) 0.5
d) 2
Answer »Answer: (a)
P × $50/100 = Q × 25/100$
P × 50 = Q × 25
P = ${Q × 25}/50 ⇒ P = Q/2$
P = Q x %
Q × $x/100 =Q/2$
x = $100/2$ = 50
Question : 9 [SSC CGL Prelim 2002]
What is 20% of 25% of 300?
a) 45
b) 15
c) 150
d) 60
Answer »Answer: (b)
20% of 25% of 300 =$20/100 × 25/100 × 300$
= $1/5 × 1/4 × 300$= 15
Question : 10 [SSC CGL Tier-1 2011]
If 90% of A = 30% of B and B = x% of A, then the value of x is
a) 700
b) 400
c) 800
d) 300
Answer »Answer: (d)
A × $90/100 = {B × 30}/100$
A × 3 = B
A × x% = A × 3
$x/100$ = 3 ⇒ x = 300
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model 1 simple percentage questions
Defination & Shortcuts … -
model 2 net increase or decrease in %
Defination & Shortcuts … -
model 3 reducing & exceeding prices
Defination & Shortcuts … -
model 4 x & y comparison
Defination & Shortcuts … -
model 5 income & expenditure
Defination & Shortcuts … -
model 6 consumption & remaining
Defination & Shortcuts … -
model 7 marks scored in examinations
Defination & Shortcuts … -
Model 8 population based
Defination & Shortcuts … -
model 9 voters & election
Defination & Shortcuts … -
model 10 percentage with allegations & mixture
Defination & Shortcuts … -
model 11 percentage with ratios
Defination & Shortcuts …
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