Answer:
The rate is 2% per year.
Explanation:
It is given that sum to be $1200000.
The interest per year to be received is $24000.
Let the rate of interest be "r".
The amount interest is given by the formula,
![(Interest) = (Principle amount)((Rate)/(100))(Time)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/q82xnq36ge0at52ypg7y6wnlosckkjyh8u.png)
![24000 = (1200000)((r)/(100))(1)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/uc7mka4ng07app23bg2haruepa3rqpqtiy.png)
![r = (24000)/(12000) = 2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/blk904esp0wob56rm0pdjub4jfrwzt4ubc.png)
Thus the rate of interest is given by 2% per year.