Answer: Weight of Charles = 177.5 pounds
Weight of dos = 22.5 pounds.
Step-by-step explanation:
Let x = Weight of Charles
y = Weight of dog.
As per given , we have the following system of linear equation :

We can write (ii) as :

Subtract equation (iii) from (i) , we get

Put this value in (1) , we get

Hence , Weight of Charles = 177.5 pounds
Weight of dos = 22.5 pounds.