Show that the meter reading after purchase is CORRECT, rounded to the nearest whole number.

Here's how to solve the problem:

2.1.2 (a) Show that the meter reading after purchase is CORRECT, rounded to the nearest whole number.

Step 1: Determine how many kWh Lebogang purchased for R398.00, considering the sliding scale tariffs and her initial meter reading.
The initial meter reading is $5.3 \text{ kWh}$. The first tariff block is $0-100 \text{ kWh}$ at $\text{R}2.775755/\text{kWh}$.
The remaining units in the first block that can be purchased are $100 kWh - 5.3 kWh =