A's salary increased by 25% then decreased by 25%. Original salary 8000, final salary: MCQ with Answer and Explanation

A's salary increased by 25% then decreased by 25%. Original salary 8000, final salary:
A. 7200
B. 7800
C. 7500
D. 7400
Answer: Option C
Solution (By JKSSB Mock Tests)
8000 × 1.25 × 0.75 = 8000 × 0.9375 = 7500.

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Practice More Percentage Questions

Question #1
A person spends 25% of his income on food, 20% on rent, 15% on education and saves the rest. If his savings are Rs. 7200, his income is:
A. Rs. 16000
B. Rs. 15000
C. Rs. 18000
D. Rs. 20000

Correct Answer: Option C


Explanation:
Spend % = 25+20+15=60%, save 40% = 7200, income = 7200/0.4 = 18000.

This question belongs to: Maths Percentage
Question #2
Ratio of two numbers 3:4. First increased 10%, second 20%. New ratio:
A. 12:17
B. 11:15
C. 11:16
D. 33:44

Correct Answer: Option C


Explanation:
First = 3.3, second = 4.8, ratio = 33:48 = 11:16.

This question belongs to: Maths Percentage
Question #3
A dishonest dealer sells goods at 10% profit but uses a weight of 800 g for 1 kg. Find his overall profit percent.
A. 35%
B. 32.5%
C. 30%
D. 37.5%

Correct Answer: Option D


Explanation:
CP per g = 1, SP per g = 1.1. For 800 g, CP=800, SP=1000×1.1? Actually, he sells 800 g as 1 kg, so SP for 800 g = price of 1 kg at 10% profit = 1.1 times CP of 1 kg. Let CP of 1 kg = 1000, SP=1100. But he gives only 800 g, so CP=800, SP=1100. Profit = 300, % = (300/800)×100 = 37.5%.

This question belongs to: Maths Percentage