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Question

If (x-9): (3x+6) is the triplicate ratio of 4:9. Find X.

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Solution

x-9 : 3x + 6 is the triplicate ratio of 4 : 9.
Hence 43:93=x9:3x+6
That is
64729=x93x+6
Ie,
192x+384=729x6561
537x=6945
x=6945537
Hence x=2315179

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