Question
PSLE
Three boys collected pens. Riordan collected 3z pens which was one third as many as what Vincent collected. Japheth collected 9 pens less than Riordan. How many pens did they collect altogether? Give the answer in terms of z in the simplest form.
2 m

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PSLE
Three boys collected pens. Riordan collected 3z pens which was one third as many as what Vincent collected. Japheth collected 9 pens less than Riordan. How many pens did they collect altogether? Give the answer in terms of z in the simplest form.