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OlgaM077 [116]
3 years ago
7

HELP

Mathematics
1 answer:
I am Lyosha [343]3 years ago
5 0

Step-by-step explanation:

since Chelsea can paint in 9hrs and Greg in 7, add the hrs and divide by 2 i.e (9+7)/2 =8 hrs

~10 hrs

MARK AS BRAINLIEST PLEASE

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