Assume Sybase Software is thinking about three different size offerings for issuance of additional shares.

Size of Offer Public Price Net to Corporation

a$.$ $ $1\mathrm{.}6$ million $ $40$ $ $36\mathrm{.}70$

b$.6\mathrm{.}0$ million $4037\mathrm{.}28$

c$.25\mathrm{.}0$ million $4038\mathrm{.}12$

What is the percentage underwriting spread for each size offer?

Note: Do not round intermediate calculations. Enter your answers as a percent rounded to $2$ decimal places.