if i take 9 hours to complete a project and you can complete it in 4 1/2 hours. how long would it take us to complete the project together
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Answer:
3
Step-by-step explanation:
A = 9 hrs
B = 9/2 hrs
A + B = (1/9)+1/(9/2)
= 1/9 + 2/9
= 3/9
= 1/3
A + B = 3
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