Marco builds a small wooden footbridge in 5 days. Nina builds the same type of bridge in 3 days. If each of them must build three identical bridges, how many more days will Marco need than Nina?
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Question 1 of 3
Marco builds a small wooden footbridge in 5 days. Nina builds the same type of bridge in 3 days. If each of them must build three identical bridges, how many more days will Marco need than Nina?
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