Given:
Principal value = 1200
Rate of interest = 7% per annum
Time = 3 years
To find:
The simple interest for three years.
Solution:
The formula for simple interest is:
![S.I.=(P* r* t)/(100)](https://img.qammunity.org/2022/formulas/mathematics/college/fk1u5b9v5hxfwxw0918hlyr2hptpfp6mz9.png)
Where, P is the principal value, r is the rate of interest in percentage and t is time in years.
Putting
in the above formula, we get
![S.I.=(1200* 7* 3)/(100)](https://img.qammunity.org/2022/formulas/mathematics/high-school/cvfsbl55rh1ih62r2t2dn07tmd7afn5vfk.png)
![S.I.=12* 7* 3](https://img.qammunity.org/2022/formulas/mathematics/high-school/feygzuc6de6y380f622xygnbq86tb1s742.png)
![S.I.=252](https://img.qammunity.org/2022/formulas/mathematics/high-school/wp4bfhnjb8gc60hh013b7gtggh9rvxnivo.png)
Therefore, the simple interest for three years is 252.