Question
Jack cut 346 cm of a wire into 3 pieces. The 1st piece was 3 times as long as the 2nd piece. The 3rd piece was 90 cm long. How long was the 2nd piece?
4 m

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Jack cut 346 cm of a wire into 3 pieces. The 1st piece was 3 times as long as the 2nd piece. The 3rd piece was 90 cm long. How long was the 2nd piece?