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Example 12 - Chapter 7 Class 7 Comparing Quantities

Last updated at May 29, 2023 by

Example 18 - The cost of a flower vase is Rs 120. If the shopkeeper

Example 18 - Chapter 8 Class 7 Comparing Quantities - Part 2

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Example 12 The number of illiterate persons in a country decreased from 150 lakhs to 100 lakhs in 10 years. What is the percentage of decrease? C.P = Rs 120 S.P = ? Loss percentage = 10% πΏπ‘œπ‘ π‘ /(𝐢.𝑃) Γ— 100% = 10% πΏπ‘œπ‘ π‘ /120 = (10%)/(100%) πΏπ‘œπ‘ π‘ /120 = (10%)/(100%) Loss = 10/100 Γ— 120 Loss = 1/10 Γ— 120 Loss = Rs 12 Now, Loss = CP βˆ’ SP SP = CP βˆ’ Loss = Rs (120 βˆ’ 12) = Rs 108 It is sold Rs 108

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.