Question
The total length of 7 wires and 7 threads is 385 cm. The length of a thread is 23 of the length of the wire. What is the total length of the 7 threads?
4 m

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The total length of 7 wires and 7 threads is 385 cm. The length of a thread is 23 of the length of the wire. What is the total length of the 7 threads?