log of 3 base 30=a, log of 5 base 30=b,so what is the value of log of 8 base 30?

its a logarithmic problem of class eleven, W.B board 2012 

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1 Answer

log 30(8)=0.6113851413

this meen 30^0.6113851413=8

DONT hav nuthun tu du with log(3) or log(5)
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