Example 12 - Chapter 7 Class 7 Comparing Quantities
Last updated at Dec. 16, 2024 by Teachoo
Examples
Example 1
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Transcript
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% πΏππ π /(πΆ.π) Γ 100 = 10 π³πππ/πππ Γ 100 = 10 πΏππ π /120 = 10/100 Loss = 10/100 Γ 120 Loss = 1/10 Γ 120 Loss = Rs 12 Now, Loss = CP β SP SP = CP β Loss = Rs (120 β 12) = Rs 108 It is sold Rs 108
