If bulk candy costs $4.00 a pound, how much will 10 pounds of candy cost?

Question

What will be an ideal response?

Answer 1

Let x equal what you are trying to find
x = ($ / purchase) Note: the unit "purchase" is made up.
Reciprocal factors
4 ($ / lb) 1/4 (1b/$)
Build an equation
x ($ I purchase) = 4.00 ($ / th) * 10 (lb / purchase)
Multiple Factors
x ($ I purchase) = 40.00 ($ / purchase)
Cost of purchase of 10 lb is $40.00.