Question 1098146
<br>Together they do the job in 4 days; so they do 1/4 of the job in 1 day.<br>
Let x be the number of days worker A takes to do the job; then x+6 is the number of days worker B takes.  Then 1/x is the fraction of the job worker A does in 1 day, and 1/(x+6) is the fraction worker B does in 1 day.<br>
Now write the equation that says the amount they do together in 1 day is the sum of they each do alone in 1 day:<br>
{{{1/4 = 1/x + 1/(x+6)}}}<br>
Then solve the equation....