Question

the model represents one roll of wrapping paper that Carlos use to wrap two boxes he use 5/8 of the roll-up to wrap the first box and 1/4 of the rule to wrap the second box what fraction of the roll of wrapping paper did Carlos use to wrap these two boxes

Answer 1

For this case we assume that the total is represented by 1

We know that Carlos use 5/8 for the first box and 1/4 for the second box, so we can do this:

`1-(5)/(8)-(1)/(4)=(1)/(8)`

And that represent the fraction of paper remaining then the answer is given by:

`1-(1)/(8)=(7)/(8)`

Carlos uses 7/8 of the paper to wrap the two boxes