12=x+y
56=2.50x+5.75y
continue on from there...
Mary makes mugs.She makes 2 sizes of mugs:a small mug that she sells for $2.50 and a large mug that she sells for $5.75.Yesterday Mary made $56.Before she opened her shop in the morning,she had 200 mugs in her inventory.At the end of the day she had 188.How many mugs of each price did she sell?
1 answer