Decimals
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wx=y xy=?
ie substitute y=wx in xy ==> x*xy= x^2*y
st1: gives x^2*y=16 so sufficient
st2: only y value , so cannot find without x ...so not sufficient.
ie substitute y=wx in xy ==> x*xy= x^2*y
st1: gives x^2*y=16 so sufficient
st2: only y value , so cannot find without x ...so not sufficient.