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Example 1:
Find simple interest on Rs. 3000 at 7% rate of interest for one year.
Solution:
Let Principal = 3000
Rate of interest = 7%
Simple interest 
Example 2:
Find simple interest on Rs. 10,000 at the rate of 5% for 5 years. Also find the amount for 5 years.
Solution:
Let Principal = 10,000 Rs.
Rate = 5%
Time 
Amount of simple interest for 5 years is
Interest 
Hence the amount after 5 years 
Example 3:
Find simple interest on Rs. 156,00 for  years at the rate of 5% per annum. Also find total amount.
Solution:
Let Principal = 15,600
Rate = 5%  
Time =  years  
Simple interest for 5 years 
Amount 
 
Example 4:
Find simple interest on Rs. 8,000 for 40 days, at 10% per annum.
Solution:
Let Principal = 8,000 Rs.
Rate = 10% per annum
Time = 40 days  
Simple interest 
 
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