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Question

If (3x - 9) : (5x + 4) is the triplicate ratio of 3: 4, find the value of x.

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Solution


(3x9)(5x+4)=3343
3(x3)(5x+4)=2764
(x3)(5x+4)=964
64x192=45x+36
19x=228
x=22819=12
x=12


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