Answer :

Answer:22 weeks.

Step-by-step explanation: difference between 12 and 18 is 6, so add another 6 weeks onto 16 weeks.

BTSArmyy

Answer:

24 weeks

Step-by-step explanation:

16 divided by 12= 1.333333333

That means 1.333333333 is used in one week.

Now do 1.333333333 x 18 and you get 24.

That means a bottle of 18 ounce shampoo from the same brand will last 24 weeks.

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