marty has saved $72 he spent $8 on a vid rental write a ratio as a fraction in simplest form to represent what proportion of his savings he has left
64/72--->8/9
To find the proportion of Marty's savings he has left, we need to subtract the amount he spent on the video rental from his total savings.
Step 1: Subtract the amount Marty spent on the video rental from his total savings.
$72 - $8 = $64
Step 2: Write the ratio as a fraction with the remaining savings as the numerator and the total savings as the denominator.
$64/$72
Step 3: Simplify the fraction to its simplest form by finding the greatest common divisor (GCD) of the numerator and denominator.
The GCD of 64 and 72 is 8.
Dividing both the numerator and the denominator by 8, we get:
$8/$9
So, the ratio as a fraction in simplest form to represent the proportion of Marty's savings he has left is 8/9.