With this information, you can calculate the quantity of ounces 40 pounds is equal to.

¿What is the inverse calculation between 1 ounce and 40 pounds?

Performing the inverse calculation of the relationship between units, we obtain that 1 ounce is 0.0015625 times 40 pounds.

Which is the same to say that 40 pounds is 640 ounces.

Forty pounds equals to six hundred forty ounces. *Approximation

A ounce is zero times forty pounds. *Approximation