HKIMO 2019 Grade 5 National Final (Heat) Set 02 Question 11

If the 9-digit number $\overline{20204B22A}$ is divisible by 24, find the maximum value of $2A+B$.

Source glossary (English–Vietnamese): 9-digit number: số có 9 chữ số; Divisible: chia hết; Maximum value: giá trị lớn nhất.