A recipe for homemade modeling clay includes 1/3 cup of salt for every cup of water. If there are 6 cups of salt, how many gallons of water are needed?

Step-by-step explanation:

If for a cup of water, 1/3 cup of salt is needed, to get the number of gallons of water needed for 6 cups of salt, we will use the following equation;

1/3 cup of salts = 1 cup of water

6 cups of salt = x cups of water

cross multiply

1/3 * x= 6*1

x/3 = 6

multiply both sides by 3

x/3 * 3 = 6*3

x = 18

Hence 6 cups of salt will need 18 gallons of water

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Step-by-step explanation: