Final answer:
A reasonable estimate would be that most of A's sales, around 80%, would be reflected in T's consolidated income statement.
Step-by-step explanation:
In order to determine the proportion of A's sales that is reflected in T's consolidated income statement, we need to use the information provided. It states that T owns 80% of A. This means that T has a majority ownership of A and is likely to include a significant portion of A's sales in its consolidated income statement.
Although the exact proportion would depend on various factors such as ownership agreements and accounting practices, it is reasonable to assume that a majority of A's sales would be reflected in T's consolidated income statement, especially if the ownership percentage is high like in this case.
Therefore, a reasonable estimate would be that most of A's sales, around 80%, would be reflected in T's consolidated income statement.