Find and compare the unit prices. Which one is the better buy?

3 for $1.00
Or
10 for 3:00

Plz answer both parts ibe been really stuck on this one :)

Respuesta :

3 for $1- about $0.33 each (1/3)
10 for $3- $0.30 each (3/10)
10 for $3 is the better buy.