math
posted by emmy on .
Yuki's age is four years more than onefourth of Xena's age. Xena's age is 21 years and 6 months more than seveneighths of Yuki's age. How old are Xena and Yuki?

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
See your later post.