Example 13 - Chapter 7 Class 7 Comparing Quantities
Last updated at Dec. 16, 2024 by Teachoo
Last updated at Dec. 16, 2024 by Teachoo
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 โ C.P Profit = 540 โ C.P Also, Profit percentage = 20% ๐๐๐๐๐๐ก/(๐ถ.๐) ร 100 = 20 (๐๐๐ โ ๐ช.๐ท)/(๐ช.๐ท) ร 100 = 20 (540 โ ๐ถ.๐)/(๐ถ.๐) = 20/100 (540 โ ๐ถ.๐)/(๐ถ.๐) = 2/10 (๐๐๐ โ ๐ช.๐ท)/(๐ช.๐ท) = ๐/๐ Cross Multiplying 5 ร (540 โ CP) = 1 ร CP 2700 โ 5 CP = CP 2700 = 6CP 6CP = 2700 CP = ๐๐๐๐/๐ CP = 900/2 CP = Rs 450 So, Cost Price is Rs 450
Examples
Example 2 Important
Example 3 Important
Example 4 (a)
Example 4 (b) Important
Example 4 (c)
Example 5
Example 6
Example 7 Important
Example 8 Important
Example 9
Example 10
Example 11 Important
Example 12 Important
Example 13 You are here
Example 14 Important
Example 15 Important
Question 1
Question 2
Question 3 Important
Question 4 Important
Question 5
Question 6 Important
About the Author
Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo