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  1. Chapter 12 Class 6 Ratio And Proportion
  2. Serial order wise
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Example 14 Cost of 1Number of envelopes purchased in Rs 35 = 105 Number of envelopes purchased in Rs 1 = 105/35 Number of envelopes purchased in Rs 10 = 105/35 × 10 = 21/7 × 10 = 3 × 10 = 30 ∴ 30 envelopes can be purchased for Rs 10 05 envelopes is Rs 35. How many envelopes can be purchased for Rs 10?

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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.