Question
PSLE
Bobby has a ribbon which is 55 cm long. He cuts it into three pieces. The first piece is (2z - 5) cm, the second one is z cm and the third one is 2z cm.  Find the value of z. Give your answer in cm.
2 m

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PSLE
Bobby has a ribbon which is 55 cm long. He cuts it into three pieces. The first piece is (2z - 5) cm, the second one is z cm and the third one is 2z cm.  Find the value of z. Give your answer in cm.