Population of a city is 80,000, increasing at 15% per year. After 1 year, population is: MCQ with Answer and Explanation

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Population of a city is 80,000, increasing at 15% per year. After 1 year, population is:

A. 94,000

B. 88,000

C. 92,000

D. 90,000

Answer: Option C

Solution (By JKSSB Mock Tests)

80,000 × 1.15 = 92,000.

This question belongs to: Maths Percentage

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Question #1

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A man spends 75% of his income. His income is increased by 20% and he increased his expenditure by 10%. What is the percentage increase in his savings?

A. 40%

B. 30%

C. 25%

D. 50%

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Correct Answer: Option D

Explanation:
Let original income = 100. Exp = 75. Savings = 25. New income = 120. New Exp = 75 + (10% of 75) = 82.5. New Savings = 120 - 82.5 = 37.5. Increase = 12.5. % Increase = (12.5 / 25) * 100 = 50%.

This question belongs to: Maths Percentage