Answer:
The weight of Shanu's dog now is 21.375 pounds.
Explanation:
We are given that Shaun's dog weighs 22 One-fourth pounds. Shaun weighed the dog after one week and found she had lost Seven-eighths of a pound.
And we have to find the weight of the dog after exercise.
The Original weight of Shaun's dog =
Converting the above mixed fraction into an improper fraction we get;
=

Now, it is stated that after walking an extra mile every day, Shanu's dog lost Seven-eighths of a pound, that is =

So, the weight of Shanu's dog now = Original weight - Weight after exercise
=

Making denominator same for both the fractions;
=
=
=
=
= 21.375 pounds.
Hence, the dog weigh 21.375 pounds now.