A can complete a work in x x x days, and B can complete the same work in 2 x 2x 2 x days. A starts the work and works for 22 9 \frac{22}{9} 9 22 ​ day...

A can complete a work in $x$ days, and B can complete the same work in $2x$ days. A starts the work and works for $\frac{22}{9}$ days, then B replaces A and finishes the remaining work in the same time that C and D together would take to complete the entire work. The efficiency ratio of C to D is $4:5$. If C and D work on alternate days starting with C, they complete the work in $\frac{89}{2}$ days. E and F together work for 24 days and then are replaced by A and B respectively, who complete the remaining work in 20 days. The efficiency ratio of E to F is $5:4$. If E and F together complete the entire work alone, what is the difference between the work done by E alone and the work done by F alone?