$14-$bit format : $1$ bit sign, $5$ bit exponent with $15$ bias and $8$ bit mantissa. Note the normalization of mantissa assume $0\mathrm{.}1$ structure.

a$.-24\mathrm{.}155$

IEEE$-754$ single precision format $(32$ bits$)$: $1$ bit sign, $8$ bit exponent with $127$ bias and $23$ bit mantissa. Note the normalization of mantissa assume $1\mathrm{.}0$ structure.

b$.112\mathrm{.}25$