Write down the ratio of the deposit amount : the total amount for the course in the form 1 : ... rounded off to TWO decimal places.

The deposit amount is R45 000.
The total amount for the course is R208 300.

The ratio of the deposit amount to the total amount is $\frac{45000}{208300}$.
To express this in the form $1 : x$, we divide the total amount by the deposit amount:

The ratio is $1 : \mathbf{4.63}$.

2.2.2

Total amount for the course = R208 300
Deposit amount = R45 000
Food-preparation module cost = R99 650

The balance for the patisserie module is the total amount minus the deposit and the food-preparation module cost.

The balance owing for the patisserie module is $\mathbf{R63\,650}$.

2.2.3

Payment Plan 1: 12 months at R9 000 per month.

Payment Plan 2: R51 825 per semester. The food-preparation module is one year, which is 2 semesters (since 1 semester = 6 months).

The difference between payment plan 1 and payment plan 2 for the food-preparation module is $\mathbf{R4\,350}$.

2.2.4

Initial investment (P) = R39 500
Interest rate for the first year ($i_1$) = 7.15% = 0.0715
Amount after 1st year ($A_1$) = $P(1 + i_1)$

The amount from the first year becomes the new principal for the second year.
Interest rate for the second year ($i_2$) = 7.85% = 0.0785
Amount after 2nd year ($A_2$) = $A_1(1 + i_2)$

The total amount that she will receive at the end of the two years is $\mathbf{R45\,640.41}$.