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Verified Answer :

I think it's 30 because you have to divide 12 by 40 and multiply the answer by 100.

Here, we need to set up a proportion.

40/12 = 100/x

Cross multiply.

40x = 40x
10012 = 1200

40x = 1200
40x/40 = 1200/40
x= 1200/40 
x= 30

Final answer: It will take 30 minutes to weave 100 inches of fabric. 


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