Final answer:
Cameron can buy a maximum of 10 apples.
Step-by-step explanation:
To determine the maximum number of apples that Cameron can buy, we need to calculate how much money he has left after buying 5 bananas. Cameron has $30 to spend and each banana costs $0.90, so 5 bananas would cost 5 x $0.90 = $4.50. Therefore, Cameron has $30 - $4.50 = $25.50 left to spend on apples. Each apple costs $2.50, so we can calculate the maximum number of apples Cameron can buy by dividing the amount he has left to spend by the price of each apple: $25.50 ÷ $2.50 = 10.