Dear anyone.

Could anyone please show me the easiest most simplest way to sork out this solution please ?

Aaron has am assortment of coins and notes in his money box. He has 9 times as many $1 coins as $5 notes, while there are 8 times as many $2 coins as $5 notes. After counting his money, Aaron discovered that he had exactly $90. How many $2 coins did Aaron have ?

Thanks a billion.