Maria deposits $R2500$ at the end of each month into an investment account that offers an interest rate of $8\mathrm{.}5\%$ per annum compounded monthly. How much of interest will she have accrued after $6$ years?

$(4)$

A$.R53752\mathrm{.}97$

B$.$ R $47128\mathrm{.}91$

C$.$ R $56912\mathrm{.}03$

D$.$ R $49608\mathrm{.}54$

A wealthy mogul is worth $R10\mathrm{.}5$ million at the end of $2019.$ The following table shows changes to his wealth from the previous year and the associated reasons.

$\backslash$table$[[$YEAR$,$CHANGE,REASON$],[2020,$Decrease by $14\%,$COVID$-19$ pandemic$],[2021,$Increase by $6\%,$Exchange rate$],[2022,$Decrease by $25\%,$Divorce$]]$

How much is he worth at the beginning of $2023?$

$(4)$

A$.7\mathrm{.}8$ million

B$.R8\mathrm{.}1$ million

C$.$ R $6\mathrm{.}8$ million

D$.$ R $7\mathrm{.}2$ million

$17.$ A company analyses its profits for five consecutive years from $2019-2023.$ The average profit was found to be R $15$ million. The profit in $2019,2020$ and $2021$ was R $12$ million, $14$ million and $10$ million, respectively. The profit in $2023$ was twice that in $2022.$ What was the profit in $2022?$

$(4)$

A$.$ R $12\mathrm{.}5$ million

B$.R13$ million

C$.$ R $14\mathrm{.}5$ million

D$.$ R $26$ million

$18.$ Consider the data below: $24,16,38,22,30,22,28,22,34$

The difference between the median and the mode is:

$(4)$

A$.3$

B$.5$

C$.2$

D$.1$