When it is full, a tank holds 15 gallons of water. jordan is using a 1 pint container to fill the fish tank. how many 1 pint containers of water will jordan need to fill the fish tank?

For this case we have the following conversion of units:
 1 gallon = 8pint
 We can then apply the following rule of three:
 1 gallon > 8 pint
 15 gallons > x
 Clearing x we have:
 x = (15/1) * (8)
 x = 120 pints
 
 Jordan will need 120 pint containers of water to fill the fish tank

6(2x + 5y)6 (2x) = 12x6 (5y) = 30y12x + 30y