Final answer:
To find the share price of Tongaat Hulett immediately before the announcement of the starch sale, divide the share price after the announcement by 1.1524.
Step-by-step explanation:
To find the share price of Tongaat Hulett immediately before the announcement of the starch sale, we can use the information that the announcement resulted in a 15.24% increase in the share price. Let's say the share price before the announcement was x. After the announcement, the share price increased by 15.24%, which can be expressed as x + 0.1524x = 1.1524x. Therefore, 1.1524x is equal to the share price after the announcement. To find x, we can divide the share price after the announcement by 1.1524: x = (share price after announcement)/1.1524.
For example, if the share price after the announcement is $100, we can calculate the share price before the announcement as x = 100/1.1524 = $86.78