At a deli counter someone bought 1 3/4 pounds of ham for $14.50 someone bought 2 1/2 pounds of turkey for $26.25 someone bought 3/8 pounds of roast beef for $5.50 which meat is the least expensive per pound.

Ham

Step-by-step explanation:

Change each mixed numeral or fraction into a decimal number, and divide each price by its weight.

Ham: ($14.50) / (1 3/4 lb) = $14.50 / (1.75 lb) = $8.29/lb

Turkey: ($26.25) / (2 1/2 lb) = $26.25 / (2.5 lb) = $10.50/lb

Roast beef: ($5.50) / (3/8 lb) = $5.50 / (0.375 lb) = $14.67/lb

The least expensive per pound is ham.