marty has saved $72. he spent $8 on a video rental. write a ratio as a fraction in simplest form to represent what portion of his savings he has left
To find what portion of Marty's savings he has left, subtract the amount he spent from his total savings:
$72 - $8 = $64
Therefore, Marty has $64 of his savings left.
To represent this as a ratio in simplest form, we can write:
$64 / $72
This can be simplified by dividing both the numerator and denominator by 8:
$8 / $9
So, the ratio in simplest form representing what portion of his savings Marty has left is 8/9.