The ratio of the lengths of two pieces of ribbon is 1:3. If 4 ft were cut from each piece, the sum of the new lengths would be 4 ft. How long would each piece be?
One piece has length
If the ratio of the length of the two pieces is
So, we know that their new lengths' sum is
So one piece would have length
However, this problem seems a little weird, since we can't really cut