Ex 7.2, 10 - What rate gives Rs 280 as interest on a sum of Rs 56,000 - Ex 7.2

part 2 - Ex 7.2, 10 - Ex 7.2 - Serial order wise - Chapter 7 Class 7 Comparing Quantities

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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

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