model 5 income & expenditure 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 : 16 [SSC CGL Prelim 2005]
Given that 10% of A's income = 15% of B's income = 20% of C's income. If sum of their income is Rs.7800, then B's income is:
a) Rs.2400
b) Rs.3000
c) Rs.3600
d) Rs.1800
Answer »Answer: (a)
10% of A = 15% of B = 20% of C
10A = 15B = 20C
${10A}/60 = {15B}/60 = {20C}/60$
$A/6 = B/4 = C/3$
A : B : C = 6 : 4 : 3
6x + 4x + 3x = 7800
13 x = 7800
x = $7800/13$ = 600
B's income = 4x = 600 × 4 = Rs.2400
Question : 17 [SSC DEO 2008]
A man spends 40% of his monthly salary on food and one-third of the remaining on transport. If he saves Rs.4,500 per month, which is equal to half the balance after spending on food and transport, his monthly salary is
a) Rs.25,000
b) Rs.22,500
c) Rs.11,250
d) Rs.45,000
Answer »Answer: (b)
Suppose monthly income of the man is Rs. x.
Expenditure on food = 40% of x = Rs.${2x}/5$
Remaining amount = x - ${2x}/5= Rs.{3x}/5$
Expenditure on transport = $1/3 × {3x}/5 = Rs.x/5$
Remaining amount = ${3x}/5 - x/5 = {2x}/5$
According to question $1/2 × {2x}/5 = 4500$
x = 4500 × 5 = Rs.22,500
Question : 18 [SSC CGL Tier-I 2010]
If A's income is 25% less than B's income, by how much percent is B's income more than that of A ?
a) 33$1/3$%
b) 30%
c) 25%
d) 66$2/3$%
Answer »Answer: (a)
Using Rule 9,
Shortcut method
Required percentage = $25/{100 - 25}×100$
= $100/3 = 33{1}/3%$
Question : 19 [SSC SO 2005]
The monthly income of a person was Rs.13,500 and his monthly expenditure was Rs.9,000. Next year his income increased by 14% and his expenditure increased by 7%. The per cent increase in his savings was
a) 28%
b) 21%
c) 7%
d) 35%
Answer »Answer: (a)
Original savings = Rs.(13500 – 9000) = Rs.4500
New income = 114% of Rs.13500 = Rs.(114 × 135) = Rs.15390
New expenditure = 107% of Rs.9000 = Rs.(107 × 90) = Rs.9630
New savings = Rs.(15390 – 9630) = Rs.5760
Percentage increase in savings = ${5760 – 4500}/4500$ × 100
= $1260/45$ = 28%
Question : 20
A's salary is 25% more than B's salary. B's salary is how much less than A's salary ?
a) 25 %
b) 24 %
c) 20 %
d) 27.5 %
Answer »Answer: (c)
Using Rule 8,
Required percentage = $25/125 ×100 = 20%$
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model 5 income & expenditure Shortcuts »
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Click to Start..percentage Shortcuts and Techniques with Examples
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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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