Question
Streamer M is thrice as long as Streamer N. Streamer N is 42 cm shorter than Streamer P. Streamer P is 70 cm shorter than Streamer M. How long is Streamer N?
4 m

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Streamer M is thrice as long as Streamer N. Streamer N is 42 cm shorter than Streamer P. Streamer P is 70 cm shorter than Streamer M. How long is Streamer N?