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  1. Chapter 8 Class 8 Comparing Quantities
  2. Serial order wise
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Ex 8.2, 9 Arun bought a pair of skates at a sale where the discount given was 20%. If the amount he pays is Rs 1,600, find the marked price. Given, Discount Percentage = 20% Sale Price = 1600 Let the marked Price = π‘₯ Discount = Marked Price βˆ’ Sale price = π‘₯ βˆ’ 1600 Now, Discount Percentage = π·π‘–π‘ π‘π‘œπ‘’π‘›π‘‘/(π‘€π‘Žπ‘Ÿπ‘˜π‘’π‘‘ π‘ƒπ‘Ÿπ‘–π‘π‘’) Γ— 100 20 = (π‘₯ βˆ’ 1600)/π‘₯ Γ— 100 20x = 100 (π‘₯ βˆ’ 1600) 20x = 100x βˆ’ 160000 20x βˆ’ 100x = βˆ’160000 βˆ’80x = βˆ’160000 80x = 160000 π‘₯ = 160000/80 π‘₯ = 2000 ∴ Marked Price = Rs 2000

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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.