Question
PSLE
Charlie has a rope which is 45 cm long. He cuts it into three pieces. The first piece is (f + 5) cm, the second one is f cm and the third one is 3f cm.  Find the value of f. Give your answer in cm.
2 m

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PSLE
Charlie has a rope which is 45 cm long. He cuts it into three pieces. The first piece is (f + 5) cm, the second one is f cm and the third one is 3f cm.  Find the value of f. Give your answer in cm.