model 6 consumption & remaining Section-Wise Topic Notes With Detailed Explanation And Example Questions
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The following question based on percentage topic of quantitative aptitude
(a) 20%
(b) 30%
(c) 25%
(d) 50%
The correct answers to the above question in:
Answer: (a)
Using Rule 8,
Required per cent = ${25 × 100}/125 = 20%$
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Read more consumption remaining Based Quantitative Aptitude Questions and Answers
Question : 1
If the price of rice be raised by 25%, the percent by which a house-holder must reduce his consumption of rice so as not to increase his expenditure on rice is
a) 20%
b) 25.75%
c) 225%
d) 25%
Answer »Answer: (a)
Using Rule 8,
Percentage decrease
= $25/125 × 100 = 20%$
Question : 2
In the new budget, the price of kerosene oil rose by 25%. By how much per cent must a person reduce his consumption of kerosene oil so that his expenditure on it does not increase ?
a) 40%
b) 25%
c) 20%
d) 50%
Answer »Answer: (c)
Using Rule 8,
Required reduction in consumption
= $\text"x"/\text"100 + x" × 100$% where x = 25
= $25/{100 + 25} × 100 = 20$%
Question : 3
The price of a commodity rises from 6 per kg to 7.50 per kg. If the expenditure cannot increase, the percentage of reduction in consumption is
a) 30%
b) 20%
c) 15%
d) 25%
Answer »Answer: (b)
Using Rule 2,
If x is increased to $x_1$ , then, Increment% = ${x_1 - x}/x ×$100
Percentage increase
= ${7.50 - 6}/6 × 100 = 25%$
Percentage decrease in consumption
= $25/125 × 100 = 20%$
Question : 4
If the price of tea is increased by 20%, by how much per cent the consumption of tea be reduced so that there is no increase in the expenditure on it ?
a) 8$1/3$%
b) 20%
c) 83$1/3$%
d) 16$2/3$%
Answer »Answer: (d)
Using Rule 8,
Reduction in consumption
= $(R/{100 + R}× 100)%$
= $(20/120×100)% = 50/3% = 16{2}/3%$
Question : 5
The price of a certain item is increased by 15%. If a consumer wants to keep his expenditure on the item the same as before, how much per cent must he reduce his consumption of that item ?
a) 10$20/23$%
b) 13$1/23$%
c) 15%
d) 16$2/3$%
Answer »Answer: (b)
Using Rule 8,
If the income of a man is A% more than another man, then the income of another man is less in comparison to the 1st man by
$(A/{(100 + A)}×100)$%
If the price of a commodity increases by R%, then reduction in consumption, not to increase the expenditure is given by
$(R/{100 + R} × 100)$%
= $15/{100 + 15} × 100 = 15/115 × 100$
= $300/23 =13{1}/23$%
Question : 6
If the price of a commodity is increased by 50%, by what fraction must its consumption be reduced so as to keep the same expenditure on its consumption ?
a) $2/3$
b) $1/3$
c) $1/4$
d) $1/2$
Answer »Answer: (b)
Using Rule 8,
Required fractional decrease
= $R/{100 + R} = 50/{100 + 50} = 1/3$
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
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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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