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Example 11:
Find the compound amount and compound interest on the principal 20,000 borrowed at 6% compounded annually for 3 years.
Solution:
Let P = 20000
r = 6%
n = 3
using 
 (compound amount)
Compound interest 
Example 12:
Find the compound amount, which would be obtained from an interest of Rs.2000 at 6% compounded quarterly for 5 years.
Solution:
Let Principal = 2000
r = 6% 
 
Example 13:
Find compound interest on Rs.2500 invested at 6% per annually, compound semi-annually for 8 years.
Solution:
Let Principal = 2500
r =6% 
We know that
 Compound interest 
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