Original salary 20000, increased 10% then decreased 10%. Final salary: MCQ with Answer and Explanation

Original salary 20000, increased 10% then decreased 10%. Final salary:
A. 20000
B. 19600
C. 19800
D. 20200
Answer: Option C
Solution (By JKSSB Mock Tests)
20000×1.1×0.9 = 19800.

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Practice More Percentage Questions

Question #1
65% of 80 is:
A. 52
B. 48
C. 54
D. 50

Correct Answer: Option A


Explanation:
0.65 × 80 = 52.

This question belongs to: Maths Percentage
Question #2
A's income is 25% more than B's, and B's income is 20% less than C's. What percent is A's income of C's?
A. 100%
B. 95%
C. 105%
D. 90%

Correct Answer: Option A


Explanation:
Let C=100, B=80, A=80×1.25=100. A is 100% of C.

This question belongs to: Maths Percentage
Question #3
A number is divided into two parts. 40% of the first part exceeds 30% of the second part by 20, and 50% of the second part exceeds 25% of the first part by 25. Find the number.
A. 240
B. 260
C. 300
D. 200

Correct Answer: Option B


Explanation:
Let parts x, y. 0.4x - 0.3y = 20 → 4x - 3y = 200. 0.5y - 0.25x = 25 → 20y - 10x = 1000 → 2y - x = 100. Solve: x = 2y - 100. Substitute: 4(2y-100)-3y=200 → 8y-400-3y=200 → 5y=600 → y=120, x=140, sum=260.

This question belongs to: Maths Percentage