Question
Mrs Andy compares the length of 3 streamers, L, M and N. Streamer L is 320 cm long. It is 110 cm longer than Streamer N. Streamer N is 200 cm shorter than Streamer M. What is the length of Streamer M?
4 m

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Mrs Andy compares the length of 3 streamers, L, M and N. Streamer L is 320 cm long. It is 110 cm longer than Streamer N. Streamer N is 200 cm shorter than Streamer M. What is the length of Streamer M?