Question

A store sells a package of 25 trading cards for​ $5.25. What is the unit price per​ card?

Answer 1

The numerator is smaller than the denominator what you divide 5.25 by 25 so the unit price is going to be less than 1.

The unit price is $0.21

Explanation:

25 cards = $5.25

5.25/25 = $0.21

Answer 2

The cost of one trading card obtained using the principle of proportionality is $0.21


Given the Parameters:

25 trading cards = $5.25


Let the Cost of one trading card = b


We could set up a proportional system to calculate the Cost of one trading card as
follows :

25 cards = $5.25
1 card = b


Cross multiply:

25b = $5.25


Divide both sides by 25 to isolate b



25b/25 = 5.25 / 25
b= $0.21


Therefore, one trading card costs $0.21