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Ex 7.2, 10 What rate gives Rs 280 as interest on a sum of Rs 56,000 in 2 years? I = Rs 280 P = Rs 56,000 T = 2 years R = ? Now, I = ๐‘ƒ๐‘…๐‘‡/100 280 = (๐Ÿ“๐Ÿ”๐ŸŽ๐ŸŽ๐ŸŽ ร— ๐‘น ร— ๐Ÿ)/๐Ÿ๐ŸŽ๐ŸŽ 280 = 560 ร— 2R 560 ร— 2R = 280 R = ๐Ÿ๐Ÿ–๐ŸŽ/(๐Ÿ“๐Ÿ”๐ŸŽ ร— ๐Ÿ) R = 140/560 R = 14/56 R = 14/56 R = 7/28 R = 1/4 R = 0.25 โˆด Rate of interest = 0.25% p.a

  1. Chapter 7 Class 7 Comparing Quantities
  2. Serial order wise

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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 14 years. He provides courses for Maths, Science and Computer Science at Teachoo