Two strings of identical paper flags are hung across a courtyard, each string tied from the same starting wall to the same opposite wall, so both strings cover exactly the same distance. The first string is made of 7 identical flags placed edge to edge with no gaps. The second string is made of 5 of the same identical flags placed edge to edge, plus a plain ribbon 48 cm long added on to reach the opposite wall. Find the length of one flag.
Opening the drawing…
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