<human>:  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?
<bot>: How many tons of grapes does her farm produce per year? ** If each acre produces 5 tons of grapes per year, then her ten-acre farm produces 10*5=<<10*5=50>>50 tons of grapes per year.
How many barrels of wine does her farm produce per year? ** If each ton of grapes makes 2 barrels of wine, then 50 tons makes 2*50=<<50*2=100>>100 barrels of wine per year.
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