Answer:
18
Explanation:
If two people paint a wall, each will paint half of the sall
If jamie paints the entire wall in 54 minutes alone then he/she can paint half the wall in 54/2=27 minutes
The question said that it took 36 minutes all together, so if 27 minutes(jamies half) is subtracted from 36, we get that it took Connie 9 minutes for her half.
If connie paints an entire wall, then we multiply the time it took her( 9 minutes) by 2 to get 18 minutes.