Answer:
To solve this problem, we can use a proportion.
Let x be the change of water in 12 weeks.
We know that in 7 weeks, the water decreased by 9 5/8 pints.
So, we can set up the proportion:
9 5/8 pints / 7 weeks = x / 12 weeks
To solve for x, we can cross-multiply and simplify:
9 5/8 pints * 12 weeks = 7 weeks * x
115 1/2 pints = 7 weeks * x
x = 115 1/2 pints / 7 weeks
x = 16 1/2 pints per 12 weeks
Therefore, the change of water in 12 weeks is 16 1/2 pints.
Explanation: