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Grade 118 grade maths

If any amount double after 10 years at simple interest then what will be the annual interest rate

Profile image of Rahul  sharma
8 Years agoGrade 11
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1 Answer

Profile image of Arun
8 Years ago
Let the principal be P and the rate of interest be R% p.a. Then, in time = 10 years, Simple Interest = Principal = P.
 
P = P * R * 10/100
R = 10%