Mary’s dog weights 81 pounds. sandy’s dog’s weight is equal to 4 pounds less than 1/3 of marys dog’s weight. how much does mandy’s dog weight?

The correct question is:

How much does Sandy’s dog weigh?

23 pounds

Step-by-step explanation:

Weight of Mary's dog = 81 pounds

Let the weight of Sandy's dog be x pounds

According to the given statement:

"Sandy’s dog’s weight is equal to 4 pounds less than 1/3 of Mary's dog’s weight"

So,

Sandy’s dog’s weight(x) = 4 pounds less than 1/3 of Mary's dog weight(81)

i.e.

So, weight of the Sandy's dog is 23 pounds.