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Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class


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Ex 7.2, 3 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 = 𝑥 Discount = Marked Price − Sale price = 𝑥 − 1600 Now, Discount Percentage = 𝐷𝑖𝑠𝑐𝑜𝑢𝑛𝑡/(𝑀𝑎𝑟𝑘𝑒𝑑 𝑃𝑟𝑖𝑐𝑒) × 100 20 = (𝒙 − 𝟏𝟔𝟎𝟎)/𝒙 × 100 20x = 100 (𝑥 − 1600) 20x = 100x − 160000 20x − 100x = −160000 −80x = −160000 80x = 160000 𝑥 = 𝟏𝟔𝟎𝟎𝟎𝟎/𝟖𝟎 𝑥 = 2000 ∴ Marked Price = Rs 2000

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Davneet Singh

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.