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Example 13 - Chapter 7 Class 7 Comparing Quantities

Last updated at May 29, 2023 by

Example 19 - Selling price of a toy car is Rs 540. If the profit made

Example 19 - Chapter 8 Class 7 Comparing Quantities - Part 2
Example 19 - Chapter 8 Class 7 Comparing Quantities - Part 3

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Example 13 Selling price of a toy car is Rs 540. If the profit made by shopkeeper is 20%, what is the cost price of this toy? S.P = Rs 540 C.P = ? Profit percentage = 20% Now, Profit = S.P βˆ’ C.P Profit = 540 βˆ’ C.P Also, Profit percentage = 20% π‘ƒπ‘Ÿπ‘œπ‘“π‘–π‘‘/(𝐢.𝑃) Γ— 100% = 20% (540 βˆ’ 𝐢.𝑃)/(𝐢.𝑃) = (20%)/(100%) (540 βˆ’ 𝐢.𝑃)/(𝐢.𝑃) = 20/100 (540 βˆ’ 𝐢.𝑃)/(𝐢.𝑃) = 2/10 (540 βˆ’ 𝐢.𝑃)/(𝐢.𝑃) = 1/5 Cross Multiplying 5 Γ— (540 βˆ’ CP) = 1 Γ— CP 2700 – 5 CP = CP 2700 = 6CP 6CP = 2700 CP = 2700/6 CP = 900/2 CP = Rs 450 So, Cost Price is Rs 450

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