The simple interest on a sum of money will be TK. 600 after 10 years. If the principal is trebled after 5 years , what will be the total interest at the end of the tenth year ?

The simple interest on a sum of money will be TK. 600 after 10 years. If the principal is trebled after 5 years , what will be the total interest at the end of the tenth year ? Correct Answer TK. 1200

In 10 years simple interest is 600 tk In 5 years simple interest is ( 600×5)/10 = 300 tk If principle is treabled interest will be treabled In next 5 years in interest = (300×3) tk. = 900 tk So, after 10 years total interest ( 900 + 300)tk = 1200 tk ×
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