RRB Group D Mock Test 01 – Question 47

Question:

An article is sold at a profit of 20%. If the selling price had been increased by ₹100, the profit percentage would have doubled. What was the cost price of the article?

एक वस्तु 20% के लाभ पर बेची जाती है। यदि विक्रय मूल्य ₹100 बढ़ा दिया गया होता, तो लाभ प्रतिशत दोगुना हो जाता। वस्तु का लागत मूल्य क्या था?

Options :

  • a) ₹200
  • b) ₹500
  • c) ₹250
  • d) ₹400
  • a) ₹200
  • b) ₹500
  • c) ₹250
  • d) ₹400

correct answer : b)

Explanation :

Initial Selling Price SP1 = 1.20 CP.
Doubled profit = 40% ⇒ New Selling Price SP2 = 1.40 CP.
Given SP2 – SP1 = 100 ⇒ 1.40 CP – 1.20 CP = 100 ⇒ 0.20 CP = 100 ⇒ CP = 100 / 0.20 = ₹500.

आरंभिक विक्रय मूल्य SP1 = 1.20 CP.
दोगुना लाभ = 40% ⇒ नया विक्रय मूल्य SP2 = 1.40 CP.
दिया गया SP2 – SP1 = 100 ⇒ 1.40 CP – 1.20 CP = 100 ⇒ 0.20 CP = 100 ⇒ CP = 100 / 0.20 = ₹500।

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