The rate is 120min/12dresses. Let's simplify it.
12/120 = 10min/1dress (or just 10)
Lets use this rate for 144 dresses
10 x 144 = 1140
It will take 1440 minutes to sell 144 dresses.
Answer: 144 dresses in 1440 minutes.
Explanation:
Divide 144 and 12 you get 12. So you multiply 12 and 120 and you get 1440.
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