human
Sonja makes her own peanut butter with peanuts and oil in a blender. She uses a ratio of two ounces of oil to smooth out every eight ounces of peanuts. Her last batch of peanut butter weighed 20 ounces. How many ounces of oil did she use?
assistant
How many ounces of oil does Sonja use? ** Sonja uses 2 ounces of oil for 8 ounces of peanuts to make 2 + 8 = 10 ounces of peanut butter.
How many ounces of peanut butter did Sonja make? ** Her last batch weighed 20 ounces, so she made 20 / 10 = <<20/10=2>>2 times her ratio.
How many ounces of oil did Sonja use? ** Thus, she used 2 * 2 = <<2*2=4>>4 ounces of oil.
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