question: Pierre, Paul, and Jacques bought 12 kg of apples. Peter wants a quarter of that and Paul wants 1/3 of that. How many kilograms will James have left?
answer: Peter wants 12 * 1/4 = <<12*1/4=3>>3 kg of apples.
  Paul wants 12 * 1/3 = <<12*1/3=4>>4 kg of apples.
  Together, Peter and Paul want a total of 3 + 4 = <<3+4=7>>7 kg of apples.
  So James will have 12 - 7 = <<12-7=5>>5 kg.
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