Math Problem Statement

On giving a discount of 30%, the shopkeeper makes a profit of 26% If the discount given is reduced by 33.33% then what is the approximate profit percentage?

Solution

Let the marked price be M and the cost price be C.

Step 1: Understanding the First Scenario

  • Discount given = 30%
    Selling Price=M30% of M=0.7M\text{Selling Price} = M - 30\% \text{ of } M = 0.7M
  • Profit is 26%, meaning: 0.7M=1.26C0.7M = 1.26C

Step 2: Understanding the Second Scenario

  • The discount is reduced by 33.33%, meaning the new discount is: 30%(33.33%×30%)=30%10%=20%30\% - \left( 33.33\% \times 30\% \right) = 30\% - 10\% = 20\%
  • New Selling Price: New S.P=M20% of M=0.8M\text{New } S.P = M - 20\% \text{ of } M = 0.8M
  • Substituting MM from 0.7M=1.26C0.7M = 1.26C: M=1.26C0.7=1.8CM = \frac{1.26C}{0.7} = 1.8C
  • New Selling Price: S.P=0.8×1.8C=1.44CS.P = 0.8 \times 1.8C = 1.44C
  • New Profit %: Profit=S.PC.PC.P×100\text{Profit} = \frac{S.P - C.P}{C.P} \times 100 =1.44CCC×100= \frac{1.44C - C}{C} \times 100 =0.44CC×100=44%= \frac{0.44C}{C} \times 100 = 44\%

Final Answer:

The approximate new profit percentage is 44%.


Do you want a more detailed breakdown or a different approach? Here are some related questions:

  1. How does the relationship between cost price, selling price, and marked price affect discounts and profits?
  2. What happens if the discount is further reduced to 10%?
  3. How can we generalize this method for any given discount and profit percentage?
  4. How do markdown strategies affect revenue and overall profit margins?
  5. What would be the loss percentage if the discount increased instead of decreasing?

Tip: Always express percentage reductions in absolute terms before applying changes to avoid confusion in calculations.

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Math Problem Analysis

Mathematical Concepts

Profit and Loss
Discounts
Algebra
Percentages

Formulas

Selling Price = Marked Price - Discount
Profit Percentage = (Selling Price - Cost Price) / Cost Price * 100
Selling Price = Cost Price * (1 + Profit Percentage)
New Selling Price = Marked Price - New Discount

Theorems

Profit and Loss Theorem
Percentage Change Theorem

Suitable Grade Level

Grades 9-11