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  1. Chapter 12 Class 6 Ratio And Proportion
  2. Serial order wise
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Ex 12.3, 10 Raju purchases 10 pens for Rs 150 and Manish buys 7 pens for Rs 84. Can you say who got the pens cheaper?For Raju, Cost of 10 pens = Rs 150 Cost of 1 pen = Rs (150/10) = Rs 15 For Manish, Cost of 7 pens = Rs 84 Cost of 1 pen = Rs (84/7) = Rs 12 Since cost of 1 pen for Manish is cheaper, ∴ Manish got the pens for a cheaper price.

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.