Can you give more information?
Answer:
a
=
4/
1
−
|
x
|
h
=
0
Step-by-step explanation:
2x+10=0
subtract 10 from both sides
2x=(-10)
divide 2 from both sides
x=-5
Eric took 20 hours to do the job alone.
<u>Step-by-step explanation</u>:
<u>Given </u>:
- Total work = 75 packages
- Joe took 5 hours to complete the total work.
The amount of work Joe alone can do per hour = 75/5 = 15 packages.
The amount of work Joe and Eric together do per hour = 75/4 = 18.75
The amount of work Eric alone can do per hour = 18.75 - 15 = 3.75
The time Eric took to complete the entire work = 75 / 3.75 = 20 hours.
