Home›MPPSC Mains (Eng)›General Studies III›Part B: Science, Technology & Public Health›Unit 2: Computer Science›Mathematical Science: Numbers and its type, Methods of Unit Measurement, Equations and Factors, Profit loss, Percentage, Simple and Compound Interest, Ratio-Proportion›A book was sold for Rs. 27.50 with a profit of 10%. If it were sold

A book was sold for Rs. 27.50 with a profit of 10%. If it were sold for Rs. 25.75, then what would have been the percentage of profit or loss ?

20205M
Model Answer

Step-by-Step Commercial Arithmetic Solution:

  1. Initial Selling Price (SP₁) = ₹ 27.50, Profit Percentage = 10%
  2. Cost Price (CP) Calculation:
    CP = [SP₁ × 100] / [100 + Profit %]
    CP = (27.50 × 100) / 110 = ₹ 25.00
  3. New Selling Price (SP₂) = ₹ 25.75
  4. Since SP₂ > CP, there is a net Profit:
    Profit = 25.75 - 25.00 = ₹ 0.75
  5. Profit Percentage:
    Profit % = (0.75 / 25.00) × 100 = 3%

Final Answer: There will be a 3% Profit.

हिंदी में प्रश्न एवं आदर्श उत्तर

एक पुस्तक को 10% लाभ के साथ 27.50 रु. में बेचा गया था । यदि इसे 25.75 रु. में बेचा गया था, तो लाभ या हानि का प्रतिशत क्या होगा ?

हल:

  1. प्रथम स्थिति में विक्रय मूल्य SP₁ = ₹ 27.50, लाभ P% = 10%
  2. क्रय मूल्य (Cost Price) की गणना:
    CP = [SP₁ × 100] / [100 + Profit %]
    CP = (27.50 × 100) / 110 = 2750 / 110 = ₹ 25.00
  3. द्वितीय स्थिति में नया विक्रय मूल्य SP₂ = ₹ 25.75
  4. चूँकि SP₂ > CP (25.75 > 25.00), अतः लाभ होगा:
    लाभ = SP₂ - CP = 25.75 - 25.00 = ₹ 0.75
  5. लाभ प्रतिशत = (लाभ / CP) × 100
    = (0.75 / 25.00) × 100 = 0.75 × 4 = 3%

उत्तर: पुस्तक को ₹ 25.75 में बेचने पर 3% का लाभ होगा।

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