Neena can finish a project in 30days bina and cia can do same work 15 and 20 days
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Answer:
Step-by-step explanation:
Neena = 30 days
Bina = 15 days
Cia = 20 days
When they all work together :
1/30 + 1/15 + 1/20
= 2/60 + 4/60 + 3/60
= 9/60
The number of days :
60/9 = 6 2/3 days
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