Can you guide me through solving this problem: Josie grows grapes on her 10-acre farm.  Each acre produces 5 tons of grapes per year, and each ton of grapes makes 2 barrels of wine.  How many barrels of wine does her farm produce per year?
If each acre produces 5 tons of grapes per year, then her ten-acre farm produces 10*5=50 tons of grapes per year.
If each ton of grapes makes 2 barrels of wine, then 50 tons makes 2*50=100 barrels of wine per year.