Final answer:
Jamal can rewire 20 outlets in 7.5 hours.
Step-by-step explanation:
To find the number of outlets Jamal will rewire, we need to determine his rate of work. In this case, we know that Jamal rewired 4 outlets in 1 1/2 hours. To find how many outlets he can rewire in 1 hour, we divide the number of outlets by the number of hours. So, 4 outlets divided by 1 1/2 hours is equivalent to 2.67 outlets per hour.
Next, we need to find how many outlets Jamal can rewire in 7.5 hours. To do this, we multiply his hourly rate (2.67 outlets per hour) by the number of hours (7.5 hours). Multiplying 2.67 outlets per hour by 7.5 hours gives us 20.03 outlets. Since we can't have a fraction of an outlet, we round down to the nearest whole number, which is 20 outlets.