Question
PSLE
Three boys collected pens. Pierre collected 4r pens which was one third as many as what Henry collected. Mark collected 9 pens less than Pierre. How many pens did they collect altogether? Give the answer in terms of r in the simplest form.
2 m

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PSLE
Three boys collected pens. Pierre collected 4r pens which was one third as many as what Henry collected. Mark collected 9 pens less than Pierre. How many pens did they collect altogether? Give the answer in terms of r in the simplest form.