The following information is available for Greenleaf Corporation for a sales volume of 500 indoor plants for the past month:

What is the contribution margin ratio?

( )		48.9%
( )		35.6%
( )		64.4%
( )		75.9%

Sales Less: variable expenses Contribution margin Less: fixed expenses Net operating income Total $112,500 $40,000 $72,500 Per Unit $225 S80 $145 $55,000