Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_2985664_8 (average VARCHAR)
### Question:
How many entries for 100 occur when the average is 15.78?
### Answer:
SELECT COUNT(100) FROM table_2985664_8 WHERE average = "15.78"