Selected MCQ

Current Question
If 3 pencils cost Rs. 9, what is the cost of 10 pencils?
  • A. Rs. 25
  • B. Rs. 27
  • C. Rs. 30
  • D. Rs. 33
Correct Answer: C
Explanation:
One pencil = Rs. 3 ⇒ 10 = Rs. 30.
Related Question 1
If 7 pencils cost Rs. 21, what is the cost of 1 pencil?
  • A. Rs. 2
  • B. Rs. 3
  • C. Rs. 4
  • D. Rs. 5
Correct Answer: B
Explanation:
Unit cost = 3.
Related Question 2
Total cost of flooring a room at Rs. 8.50 per m² is Rs. 510. Find the area.
  • A. 7.5 m²
  • B. 8.5 m²
  • C. 10.5 m²
  • D. 12.5 m²
Correct Answer: A
Explanation:
Area = cost/rate = 510/8.5.
Related Question 3
If cost price is Rs. 1000 and selling price is Rs. 850, loss percent is ____.
  • A. 10%
  • B. 12%
  • C. 15%
  • D. 20%
Correct Answer: C
Explanation:
Loss = 150 → 15%.
Related Question 4
If cost price is Rs. 750 and selling price is Rs. 900, profit percent is ____.
  • A. 15%
  • B. 18%
  • C. 20%
  • D. 25%
Correct Answer: C
Explanation:
Profit = 150 → 150/750 ×100 = 20%.
Related Question 5
If loss is 10% and cost price is Rs. 500, selling price is ____.
  • A. Rs. 450
  • B. Rs. 400
  • C. Rs. 420
  • D. Rs. 480
Correct Answer: A
Explanation:
SP = 90% of 500.