Example 15 - Chapter 7 Class 7 Comparing Quantities

Last updated at April 16, 2024 by

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Example 15 If Manohar pays an interest of Rs 750 for 2 years on a sum of Rs 4,500, find the rate of interest?I = Rs 750 T = 2 years P = Rs 4500 R = ? Now, I = 𝑃𝑅𝑇/100 750 = (𝟒𝟓𝟎𝟎 × 𝑹 × 𝟐)/𝟏𝟎𝟎 750 = 45 × 2R 45 × 2R = 750 R = 𝟕𝟓𝟎/(𝟒𝟓 × 𝟐) R = 375/45 R = 125/15 R = 25/3 R = 8 𝟏/𝟑 % p.a So, rate of interest is 8 𝟏/𝟑 % p.a

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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