Model 8 population based Section-Wise Topic Notes With Detailed Explanation And Example Questions
MOST IMPORTANT quantitative aptitude - 11 EXERCISES
-
Top 199+ Percentage Aptitude Questions Answers Mcq Quiz »
-
New 159 Percentage Aptitude (Increase, Decrease) Mcq Quiz »
-
Latest 200+ Aptitude Percentage Based Questions Mcq Quiz »
-
New 250+ Aptitude Percentage Questions With Solutions Mcq »
-
255+ Top Aptitude Percentage Shortcuts Questions Mcq Test »
-
249+ Aptitude Percentage Problems with Solutions Mcq Quiz »
-
New Aptitude Percentage Questions with Solutions Mcq Quiz »
-
199+ Percentage Aptitude Questions Solutions Mcq for Bank »
-
Top 299+ Aptitude Percentage Questions Mcq Quiz Bank Exam »
-
Top 199+ Percentage Aptitude Online Test For UPSC TNPSC »
-
New 150+ Percentage Question & Answer for All Bank Exams »
The following question based on percentage topic of quantitative aptitude
(a) 4000
(b) 4500
(c) 3800
(d) 3500
The correct answers to the above question in:
Answer: (a)
Using Rule 17,
If the population of village two years ago be $P_0$,
then P = $P_0(1 + R/100)^T$
4410 = $P_0(1 + 5/100)^2$
4410 = $P_0(1 + 1/20)^2$
4410 = $P_0(21/20)^2$
4410 = ${441P_0}/400$
$P_0 = {4410 × 400}/441$ = 4000
Discuss Form
Read more population based Based Quantitative Aptitude Questions and Answers
Question : 1
The value of a machine depreciates every year by 10%. If its present value is Rs.50,000 then the value of the machine after 2 years is _________.
a) Rs.45,000
b) Rs.40,050
c) Rs.40,005
d) Rs.40,500
Answer »Answer: (d)
Using Rule 18,
Required value = $50000(1 - 10/100)^2$
= $50000 × {9 × 9}/100$ = Rs.40500
Question : 2
The value of a machine depreciates by 5% every year. If its present value is Rs.2,00,000, its value after 2 years will be
a) Rs.1,99,000
b) Rs.1,80,500
c) Rs.1,80,000
d) Rs.2,10,000
Answer »Answer: (b)
Using Rule 18,
$A = P(1 - R/100)^T$
= $200000(1 - 5/100)^T$
= $200000 × 19/20 × 19/20$ = Rs.80500
Question : 3
Of the 1000 inhabitants in a town 60% are males of whom 20% are literate. If of all the inhabitants, 25% are literate, then what percentage of the females of the town are ilterate ?
a) 32.5
b) 27.5
c) 37.5
d) 22.5
Answer »Answer: (a)
Population of town = 1000
Males ⇒ 600; Females ⇒ 400
Literate males = ${600 × 20}/100$ = 120
Total literate inhabitants
= ${1000 × 25}/100$ = 250
Literate females = 250 – 120 = 130
Required percent = $130/400$ × 100 = 32.5%
Question : 4
In a factory, the production of cycles rose to 48, 400 from 40,000 in 2 years. The rate of growth per annum is
a) 8%
b) 9%
c) 10.5%
d) 10%
Answer »Answer: (d)
Using Rule 17,
If the rate of increase per annum be R%, then
A = P$(1 + R/100)^T$
48400 = 40000$(1 + R/100)^2$
$484/400 = (1 + R/100)^2$
$121/100 = (11/10)^2 = (1 + R/100)^2$
1 + $R/100 = 11/10$
$R/100 = 11/10 - 1 = 1/10$
$R = 100/10$ = 10% per annum
Question : 5
If a man receives on one-fourth of his capital 3% interest, on two third 5% and on the remainder 11%, the percentage he receives on the whole is
a) 5
b) 4.5
c) 5.5
d) 5.2
Answer »Answer: (a)
Required percent
= $1/4 × 3 + 2/3 × 5 + (1 - 1/4 - 2/3) × 11$
= $3/4 + 10/3 + 11/12 = {9 + 40 + 11}/12$ = 5%
Question : 6
In a city, 40% of the people are illiterate and 60% are poor. Among the rich, 10% are illiterate. The percentage of the illiterate poor population is
a) 60
b) 36
c) 40
d) 50
Answer »Answer: (a)
Let the population of the city be 100.
Total illiterate people = 40
Poor people = 60; Rich people = 40
Illiterate rich people = ${40 × 10}/100$ = 4
Illiterate poor people = 40 – 4 = 36
Required percent = $36/60 × 100$ = 60%
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
percentage Shortcuts and Techniques with Examples
-
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 …
Verbal Reasoning
Question & Answer Quiz
Non Verbal Reasoning
Question & Answer Quiz
Quantitative Aptitude
Question & Answer Quiz
Computer MCQ
Question & Answer Quiz
General English
Question & Answer Quiz
History GK
Question & Answer Quiz
Polity GK
Question & Answer Quiz
Geography GK
Question & Answer Quiz
Economy GK
Question & Answer Quiz
General Awareness GK
Question & Answer Quiz
Recently Added Subject & Categories For All Competitive Exams
100+ Quadratic Equation Questions Answers PDF for Bank
Quadratic Equation multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams
Continue Reading »
IBPS Aptitude Linear Equations MCQ Questions Answers PDF
Linear equations multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams
Continue Reading »
New 100+ Compound Interest MCQ with Answers PDF for IBPS
Compound Interest verbal ability questions and answers solutions with PDF for IBPS RRB PO. Aptitude Objective MCQ Practice Exercises all competitive exams
Continue Reading »
100+ Mixture and Alligation MCQ Questions PDF for IBPS
Most importantly Mixture and Alligation multiple choice questions and answers with PDF for IBPS RRB PO. Aptitude MCQ Practice Exercises all Bank Exams
Continue Reading »