find a unit rate and use it to write an equation relating the two variables:

12 cents for 20 beads
450 miles on 15 gallons of gasoline
3 cups water for 2 cups of orange

find a unit rate and use it to write an equation relating the two variables:

12 cents for 20 beads
8 cents for 10 nails
450 miles on 15 gallons of gasoline
3 cups of water for 2 cups of orange concentrate