Question 4 Determine the ratio of a:b:c:d, when a:b=4:5, b:c=2:3, and c:d=3:4.
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Determine the ratio of a:b:c:d, when a:b=4:5, b:c=2:3, and c:d=3:4.
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Answer: A. A) 4:8:15:21
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