find the compounded ratio of 4:5, 5:7 and 9:11
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answer =it is not possible
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36:77
Step-by-step explanation:
compounded ratio of the form:
a :b ,b:c and c : d
= (a×b×c) : (b×c×d) = (4×5×9):(5×7×11 )
= 36 : 77
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