Compute the total cost per year of the following pair of expenses. Then complete the sentence: On an annual basis, the first set of expenses is _______% of the second set of expenses. Vern buys ten lottery tickets each week at a cost of $2 each and spends $900 per year on his textbooks.

Answer: On an annual basis, the money spent on lottery tickets is -------% of the money spent to buy textbooks.

(Round to the nearest percent as needed.)