Christine and Rachel went strawberry picking.  They want to make pies and need 3 pounds of strawberries per pie.  Christine picked 10 pounds of strawberries and Rachel picked twice as much as Rachel.  Together, how many pies can they make?
Christine picked 10 pounds and Rachel picked twice as much, so Rachel picked 10*2 = <<10*2=20>>20 pounds of strawberries
Christine picked 10 pounds and Rachel picked 20 pounds for a combined total of 10+20 = <<10+20=30>>30 pounds of strawberries
They need 3 pounds of strawberries to make 1 pie and they have 30 pounds so they can make 30/3 = <<30/3=10>>10 strawberry pies
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