a sum of money amounts to 10000 after 5 years and 15000 after 8 years at the same rate of simple interest. Find the rate of interest per annum
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Step-by-step explanation:
let let the rate of interest be X
interest for 5 year=10000×X×5/100=500X
interest for 8 years=15000×X×8/100= 1200X
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