Multi step math problem

Question

Greg bought 2 boxes of balloons. He used half of them to decorate his yard. He used 40 to decorate his porch. He used the rest inside his house. How many balloons did he use inside

Answer 1

The problem requires more information, If you knew how many balloons were in a box, you could arrive at a number. If we do not know how many are in a box, 1/2 were used in the yard, or one entire box. From the other box, 40 were used for the porch. The number of balloons used in the house is one box minus 40 balloons.