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In Delta A B C, we have A B: B C=2: 3 an...

In `Delta A B C`, we have `A B: B C=2: 3` and `BC: CA=4: 5`. What is `AB: BC: CA ?`

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`A B: B C=2: 3=8: 12` BC `: C A=4: 5=12: 15`
AB `: B C: A C=8: 12: 15`
OR
`A B: B C =2: 3=2/3:: 1`
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