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A longer borderYear 8 Maths · T1 W5–6 · H03

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On a diagram, a border has plain:striped length = 2:5 and total length 3½ m. Find the two lengths. Explain whether fractional lengths are allowed in this paper model.

A way to check: seven parts share 7/2 m, so one part is 1/2 m. The lengths are 1 m and 2½ m. Their sum is 3½ m and their ratio remains 2:5.