model 6 consumption & remaining Section-Wise Topic Notes With Detailed Explanation And Example Questions
MOST IMPORTANT quantitative aptitude - 11 EXERCISES
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The following question based on percentage topic of quantitative aptitude
(a) 15$1/3$%
(b) 16$2/3$%
(c) 16$1/3$%
(d) 15$2/3$%
The correct answers to the above question in:
Answer: (b)
Using Rule 8,
Percentage decrease in the consumption of petrol
= $(20/{100 + 20} × 100)$%
= $50/3 = 16{2}/3$%
Discuss Form
Read more consumption remaining Based Quantitative Aptitude Questions and Answers
Question : 1
Price of milk has increased by 20%. To keep the expenditure unchanged, the present consumption is to be reduced by :
a) 16$2/3$%
b) 18%
c) 20%
d) 10%
Answer »Answer: (a)
Using Rule 8,
Required percentage decrease
= $20/{100 + 20} × 100$
= $50/3 = 16{2}/3$%
Question : 2
Price of sugar rises by 20%. By how much percent should the consumption of sugar be reduced so that the expenditure does not change?
a) 15%
b) 10%
c) 20%
d) 16$2/3$%
Answer »Answer: (d)
Using Rule 8,
If the income of a man is A% more than another man, then income of another man is less in comparison to the 1st man by
$(A/{(100 + A)}×100)$%
Smart approach
Required percentage decrease
= $\text"Increase"/\text"100 + Increase" × 100$
= $20/{100 + 20} × 100$
= $100/6 = 16{2}/3%$
Question : 3
Price of a commodity has increased by 60%. By what per cent must a consumer reduce the consumption of the commodity so as not to increase the expenditure ?
a) 60%
b) 37.5%
c) 37%
d) 40.5%
Answer »Answer: (b)
If the reduction in consumption be x%, then
$60 - x - {60x}/100 = 0$
$60 - x - {3x}/5 = 0$
300 – 5x – 3x = 0
8x = 300 ⇒ x = $300/8 = 37.5%$
Using Rule 8,
If the income of a man is A% more than another man, then income of another man is less in comparison to the 1st man by
$(A/{(100 + A)}×100)$%
Required percentage = $60/160 × 100%$
= $300/8 = 75/2 = 37.5%$
Question : 4
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 : 5
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 : 6
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
= $25/125 × 100 = 20%$
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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