Question
The total length of 5 threads and 9 strings is 310 cm. The length of a string is 37 of the length of the thread. What is the total length of the 9 strings?
4 m

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The total length of 5 threads and 9 strings is 310 cm. The length of a string is 37 of the length of the thread. What is the total length of the 9 strings?