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CTET Maths MCQ - Percentage

21 In an organization, 40% of the employees are matriculates, 50% of the remaining employees are graduates, and the remaining 180 are postgraduates. How many employees are graduates?

Let total employees = 100
Matriculates = 40
Remaining = 100 − 40 = 60
Graduates = 50% of remaining 60 = 30
Postgraduates = 100 − 40 − 30 = 30
Graduates = Postgraduates
Hence, graduates are also 180

22 In a town, 96% of the population is 23,040. The total population of the town is

96% of total population = 23,040
Hence, total population = 23,040 × 100/96 = 24,000

23 A man spends Rs 3500 and saves 12 1/2 % of his income. His monthly income (in Rs ) is

(100 – 12.5)%, i.e., 87.5% of total income = 3500,
total income = 3,500 × 100/87.5 = 4000

24 The price of an item increased by 20% and then decreased by 20%. The final price as compared to the original price is

+20 − 20 + (−20) × (+20)/100 = −4%

25 X’s salary is half that of Y. If X got a 50% rise in his salary and Y got a 25% rise in his salary, then the percentage increase in combined salaries of both is

Let Y’s salary = 100, then X’s salary = 50
X’s new salary = 50 × 3/2 = 75
Y’s new salary = 100 × 5/4 = 125
Combined old salary = 100 + 50 = 150
New combined salary = 75 + 125 = 200
Increase in combined salary = 50
Percentage increase = 50/150 × 100 = 33.33%

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Question:

A shopkeeper uses a weight of 800 g for 1 kg and professes to sell his goods at cost price. His profit is

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Shopkeeper uses a weight of 800 g instead 1 kg, so that gain = 1000 - 800 x100 800 = 200 /800…

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