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Andrews [41]
2 years ago
8

The ratio of red to black pens in a drawer is 4 to 7.

Mathematics
1 answer:
jeka57 [31]2 years ago
8 0
12 red, 21 black.

4/7 = 12/21

if you divide 12 by 3 it equals 4
if you divide 21 by 3 it equals 7
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