Luis is making chocolate chip cookies. The recipe calls for 1/8 cup of almonds for every 3/4 cup of chocolate chips. If Louis uses 3 cups of chocolate chips, how many cups of almonds will he need? Round to the nearest 10th.
First find how many sets of 3/4 cups are in 3 cups of chocolate chips: 3 cups / 3/4 cup/set = <<3/(3/4)=4>>4 sets
Then multiply that number by 1/8 cup to find how many cups of almonds Luis needs: 4 sets * 1/8 cup/set = <<4*1/8=1/2>>1/2 cup. Answer: \boxed{0.5}.