(Max Points) Do not answer if you’re not 100% sure. I’ll report if wrong.
2 answers:
Answer:
B
Step-by-step explanation:
Rocco: of the job per hour
Giulia: of the job per hour
Together: of the job per hour
Rocco + Giulia = Together


3x + 21 = 7x
21 = 4x

It will take Giulia
hours to paint the room by herself.
⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋⪋
Giulia:
B)


1=1
so it's true
Answer:
Step-by-step explanation:
<u>Job can be determines as:</u>
<u>We have:</u>
- Time 3 hours and
- Rates 1/7 and r
<u>Sum of the parts completed by both Rocco and Giulia gives the job, which is considered as a whole or 1:</u>
- 1 = 3(1/7 + r)
- 1 = 3/7 + 3r
or
Correct choice is B
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