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ICSE Class 6 Answered

A certain sum of money amounts to RS 1680 in 3 years at SI and amounts to RS 1920 in 7 years at the same rate. What could be the rate of interest per annum?  
Asked by shalina_madhwani | 23 Jul, 2018, 10:02: PM
answered-by-expert Expert Answer
begin mathsize 16px style 1 st space condition 1680 equals straight P plus PNR over 100 1680 equals straight P plus fraction numerator 3 PR over denominator 100 end fraction....... left parenthesis 1 right parenthesis 2 nd space condition 1920 equals straight P plus fraction numerator 7 PR over denominator 100 end fraction....... left parenthesis 2 right parenthesis Solve space left parenthesis 1 right parenthesis space and space left parenthesis 2 right parenthesis space simultaneously end style
Answered by Arun | 24 Jul, 2018, 10:30: AM

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