Boat Emporium (BE) must raise $162 million. To do so, BE expects to issue new common stock. BE's investment banker will charge issuing costs equal to 10 percent of the total amount issued. If the stock can be issued for $80 per share, how many shares must BE sell to net $162 million after flotation costs. Round yout answer to the nearest whole number.

So to compare boxes, you want to convert both to price per ounce unit.

So for smaller box, we have ratio $2.89 / 17 ounces which can be reduced to $0.17 per ounce. You just divide 2.89 by 17.

Now for larger box, we have ratio $3.29 / 24 ounces which can be reduced to approximately $0.14 per ounce. 0.137083333... to be exactly.

Larger box has smaller ratio compared to smaller box therefore larger box the is better buy.

The difference per ounce is 0.17 - 0.137083333... = 0.03291666... so that's 3.3 cents cheaper per ounce.

Final  The larger box is the better buy because it is approximately 3.3 cents cheaper per ounce.