Find the principal ,if the compound interest payable annually at 10%p.a for 3 years is rupees 1331
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Explanation:
let the principal be x
then
A = p×(1+r/100)^t
1331 = x × ( 1 + 10/100)^3
=> 1331 = x×(110/100)^3
=> 1331 = x × 110/100×110/100×110/100
=> 1331×100×100×100/(110×110×110) = x
=> x = 1000
ans . Therefore the principal will be 1000 rs.
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