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Example 19 - Chapter 8 Class 7 Comparing Quantities
Last updated at March 23, 2023 by Teachoo
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Example 10 (c)
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Example 19 You are here
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Transcript
Example 19 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 β C.P Profit = 540 β C.P Also, Profit percentage = 20% ππππππ‘/(πΆ.π) Γ 100% = 20% (540 β πΆ.π)/(πΆ.π) = (20%)/(100%) (540 β πΆ.π)/(πΆ.π) = 20/100 (540 β πΆ.π)/(πΆ.π) = 2/10 (540 β πΆ.π)/(πΆ.π) = 1/5 Cross Multiplying 5 Γ (540 β CP) = 1 Γ CP 2700 β 5 CP = CP 2700 = 6CP 6CP = 2700 CP = 2700/6 CP = 900/2 CP = Rs 450 So, Cost Price is Rs 450
