need help my mom tried

Answer:
6.8
Step-by-step explanation:
Okay so you worked 20 hours last week and earned $136, so with both of those jobs combined..to earn $136 you should have worked 6.8 hours both jobs.
Basically how I did it was by typing this ⬆️ up there, reading it over, looking at the numbers and saying: "Okay both jobs combined she worked 20 hours, and made $136. So then I did 136÷20 and I got 6.8.
May be a bit confusing, trying to multitask here so just read it again and see if it makes sense..or just ask me to explain by commenting on this answer.