$1\mathrm{.}2$ The consumer price index $($CPI$)$ is provided below:

An investor acquired an inflation$-$linked bond, which was issued on $1$

November $2022$ with a face value of R $1000000.$ The bond has a coupon

rate of $3\mathrm{.}25\%$ which is paid semi$-$annually and utilises a principal$-$

indexed cash$-$flow structure.

Note: CPI figures are published on the last day of the month with a $3-$

month lag.

$1\mathrm{.}2\mathrm{.}1$ Calculate the index ratio applicable on $30$ April $2023$ when the

first coupon payment becomes due. Also, indicate the applicable

months which are to be used for the calculation of the ratio

clearly.

$1\mathrm{.}2\mathrm{.}2$ Calculate the coupon payment due on $30$ April $2023.$