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Answer 1 · 2018-02-15T12:56:10

#16 \ "oz"#

Well, let #x# be the full weight of the box of rice.

We know that he uses #3/4# of the box to cook rice, and that portion weighs #12 \ "oz"#. So, our equation is

#3/4x=12 \ "oz"#

#x=4/3 * 12 \ "oz"#

#x=16 \ "oz"#

So, the full weight of that box is #16# ounces.

Answer 2 · 2018-02-15T12:58:32

See the explanation

Let the total weight of box be x ounce.

So, according to the question

#3/4# of x is equal to 12 ounce

#" Or "3/4 x = 12#

#-> x = 12 * 4/3#

#-> x = cancel12^4*4/(cancel3)#

#-> x = 4 * 4#

#-> x = "12 ounce"#