Question
The length of Strings D and E is 31.11 m. The length of Strings E, F and G is 57.49 m. The total length of Strings F, G and H is 78.37 m. String H is twice the length of String D. Find the length of String D. Express the answer in metres.
4 m

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The length of Strings D and E is 31.11 m. The length of Strings E, F and G is 57.49 m. The total length of Strings F, G and H is 78.37 m. String H is twice the length of String D. Find the length of String D. Express the answer in metres.