
Answer:
95
Step-by-step explanation:
If the ratio is
8 : Â 9
and you know that there are 40 blue cards, than multiply the ratio by 5
8 Â â‹… Â 5 : 9 Â â‹… Â 5
40 Â : Â 45
If Max has 40 blue cards, he will have 45 red cards. Therefore, he has  40  +  45  =  95  cards in total.