Question 995191
cents per ounce or ounces per cent.
1.  67/58=1.155; 17/15=1.133.  The second is fewer cents per ounce.  It is a better buy.
2.  29/13=2.31; 56/27=2.07.  The first gives more ounces per cent.  It is a better buy.
3.  17/23=0.74; 25/34=0.735; 73/96=0.760.  The third is more ounces per cent.  It is the best buy.