Selected MCQ

Current Question
A 20% reduction in the price of salt allows a lady to buy 10 kg more for Rs. 100. What is the original price per kg?
  • A. 2.5
  • B. 2⅔
  • C. 2.5
  • D. 3
Correct Answer: C
Explanation:
Using the inverse price-quantity relation yields Rs. 2.5/kg.
Related Question 1
A 20% reduction in the price of rice allows a person to buy 3.5 kg more for the same money. What is the original price per kg?
  • A. Rs. 20
  • B. Rs. 22.50
  • C. Rs. 25
  • D. Rs. 27.50
Correct Answer: D
Explanation:
Using the proportional relation, the original price is Rs. 27.50.
Related Question 2
A 40% reduction in banana price enables a man to buy 64 more bananas for Rs. 40. What is the reduced price per dozen?
  • A. Rs. 5
  • B. Rs. 4
  • C. Rs. 2
  • D. Rs. 3
Correct Answer: D
Explanation:
Unit price calculated from increased quantity.
Related Question 3
The price of an article is reduced by 25%. To restore original price, the increase needed is ____.
  • A. 33 1/3 %
  • B. 9 1/11 %
  • C. 11 1/9 %
  • D. 66 2/3 %
Correct Answer: A
Explanation:
Same logic as above, increase must be 33 1/3%.
Related Question 4
The price of an article is reduced by 25%. By what percent should it be increased to restore the original price?
  • A. 33 1/3 %
  • B. 11 1/9 %
  • C. 9 1/11 %
  • D. 66 2/3 %
Correct Answer: A
Explanation:
Required increase = 25/75 ×100 = 33 1/3%.
Related Question 5
In a hostel, there were 100 students. If 20 more join and the average expense decreases by Rs. 5, what is the original average?
  • A. Rs. 5000
  • B. Rs. 4600
  • C. Rs. 5400
  • D. Rs. 2300
Correct Answer: C
Explanation:
Using weighted average adjustment gives Rs. 5400.