Question

Which is a better buy, 3 pounds of potatoes for $1.80, or a 10 pounds of potatoes for $6.00?

Answer 1

Data:

• Option A: 3 pounds of potatoes for $1.80

,

• Option B: 10 pounds of potatoes for $6.00

Procedure:

0. We have to know how many pounds are given per dollar for each option to be comparable.

Option A:

$\frac{3}{1.80}=\frac{5}{3}=1.67$

Option A gives 1.67 pounds per dollar.

Option B:

$\frac{10}{6}=\frac{5}{3}=1.67$

Option B gives 1.67 pounds per dollar.

Answer: As both options have the same amount of pound per dollar, both are the same buy.