Question

Which has the lowest price per unit.

$23.35 per 6.5 lbs.
$31.60 per 8 lbs.

Answer 1

Per unit is referring to per lbs
Thus,
Total money needed to count per lbs

Solution:
23.35/6.5 = 467/130 = $3.59 per lbs
31.60/8 = 79/20 = $3.95 per lbs
Thus,
$23.35 per 6.5 lbs has the lowest price per unit