i purchased the red & green mm's for the holidays. there were 1800 mm's in the bag. surprisingly the ratio of red mm's to the green was 4:5 how many less red Mm's were there in the bag
4/[4+5] x 1,800 =800 number of red M&M's
5/[4+5] x 1,800 =1,000 number of green M&M's.
1,000 - 800 =200 fewer red M&M's than green M&M's.