12. If a: b = 7:5, 6: C = 9:11, find a: b: c? 1 point
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Answer =
Here we have
a:b=7:5
b:c=9:11
——————
a. b. c.
7. 5. 5.
9. 9. 11.
—————-
63:45:55 <- multiply
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