A shopkeeper sells an article at 15% profit. Had he bought it at 10% less and sold it for Rs. 10 more, he would have gained 30%. Find the cost price. MCQ with Answer and Explanation

A shopkeeper sells an article at 15% profit. Had he bought it at 10% less and sold it for Rs. 10 more, he would have gained 30%. Find the cost price.

A. Rs. 400

B. Rs. 500

C. Rs. 600

D. Rs. 700

Answer: Option B

CP=x, SP=1.15x. New CP=0.9x, new SP=1.15x+10 = 1.3×0.9x = 1.17x → 0.02x=10 → x=500.

This question belongs to: Maths Percentage

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Question #1 Report Error

Price increased 15% then decreased 10%. Net change:

A. 5% increase

B. 4.5% increase

C. 5.5% increase

D. 3.5% increase

Correct Answer: Option D

Explanation:
1.15×0.9 = 1.035, increase 3.5%.

This question belongs to: Maths Percentage

Question #2 Report Error

If A's salary is 25% more than B's salary, then by what percentage is B's salary less than A's salary?

A. 25%

B. 20%

C. 30%

D. 22.5%

Correct Answer: Option B

Explanation:
Let B's salary be 100. A's salary = 125. B is 25 less than A. Percentage = (25 / 125) * 100% = 20%.

This question belongs to: Maths Percentage

Question #3 Report Error

Original salary 20000, increased 10% then decreased 10%. Final salary:

A. 20000

B. 19800

C. 19600

D. 20200

Correct Answer: Option B

Explanation:
20000×1.1×0.9 = 19800.

This question belongs to: Maths Percentage