1:50,000
1cm = 100000km
2/100000 = 50000
1:50000
2to1
7
1:200000
3/4
0.77
1::2 is the simplest form...
1:5
63/79 it can't be simplified any further
scale factor
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scale drawing
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divde 120 sweets by the ratio 1:3
18/7 is in its simplest form.
7/14