Question

Help please just answer would be fine

Answer 1

The amount of water decreases $16\frac{1}{2}$ pints in 12 weeks.

Solution:

The amount of water decreases in 7 weeks = $9\frac{5}{8}$ pints

The amount of water decreases each week is same.

Let us first change the mixed fraction into improper fraction.

$9\frac{5}{8}$ pints = $\frac{(9\times8)+5}{8}$

             $=\frac{77}{8}$ pints

The amount of water decreases in 1 week

              $=\frac{\frac{77}{8} }{7}$

              $=\frac{77}{8\times7}$

              $=\frac{11}{8}$

So, the amount of water decreases in 1 week is $\frac{11}{8}$ pints.

The amount of water decreases in 12 week

               $=\frac{11}{8}\times12$

               $=\frac{132}{8}$

               $=16\frac{4}{8}$

               $=16\frac{1}{2}$ pints

Hence the amount of water decreases $16\frac{1}{2}$ pints in 12 weeks.