An experienced computer technician can set up a network in 12 hours. It would take an intern 20 hours to set up the same network. If they work together, how long will it take to set up the network? If the experienced technician and intern work together, then we assume that the
time
they work is the same.
A 3-column tables has 2 rows. The first column is labeled Rate with no entries. The second column is labeled Time with entries x, x. The third column is labeled Part of job with no entries. The first row is labeled Experienced. The second row is labeled Intern.
The rate of the experienced technician is
✔ 1/12
.
Complete the table, set up an equation, and solve the problem.

It takes
7.5
hours for the experienced technician and the intern to set up the network if they work together.