Question
The length of pipe P is 45 of the length of pipe S and the length of pipe S is 23 of the length of pipe Q and 23 of the length of pipe R. What fraction of the total length of the 4 pipes is pipe R?
3 m

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The length of pipe P is 45 of the length of pipe S and the length of pipe S is 23 of the length of pipe Q and 23 of the length of pipe R. What fraction of the total length of the 4 pipes is pipe R?