Answer:
He can spend no more than $5 for each card.
Explanation:
Thomas has $24.
He wants to spend $9 on a book, and the rest on three birthday cards.
After he buys the book, he will have $24 - $9 = $15.
He has $15 to spend on three cards.
How much can he spend on each card?
$15 total for three cards.
15/3 = 5
He can spend $5 for each card. That is, putting into the sentence frame:
He can spend no more than $5 for each card.