Yahya borrowed 3000rs for 4years and 8000rs for 2.5 years from Sonia at the same rate of intrest. The total intrest earned by sonia is 2880. Find the rate of intrest
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interest= Principal×rate×time/100
let the rate be r %
therefore 3000× r×4/100 + 8000×r×2.5/100 = 2880
then 120r +200r= 2880
320 r = 2880
r = 9% Ans
let the rate be r %
therefore 3000× r×4/100 + 8000×r×2.5/100 = 2880
then 120r +200r= 2880
320 r = 2880
r = 9% Ans
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