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  1. Chapter 8 Class 7 Comparing Quantities
  2. Serial order wise
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Ex 8.3, 9 Find the amount to be paid at the end of 3 years in each case: (a) Principal = Rs 1,200 at 12% p.a P = Rs 1200 R = 12% p.a T = 3 years S.I = ๐‘ƒ๐‘…๐‘‡/100 = (1200 ร— 12 ร— 3)/100 = 12 ร— 12 ร— 3 = 12 ร— 36 = Rs 432 Amount to be paid = P + S.I = 1200 + 432 = Rs 1632 Ex 8.3, 9 Find the amount to be paid at the end of 3 years in each case: (b) Principal = Rs 7,500 at 5% p.a. P = Rs 7500 R = 5% p.a T = 3 years S.I = ๐‘ƒ๐‘…๐‘‡/100 = (7500 ร— 5 ร— 3)/100 = 75 ร— 5 ร— 3 = 75 ร— 15 = Rs 1125 Amount to be paid = P + S.I = 7500 + 1125 = Rs 8625

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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.