In 1845, many mill girls earned 40 cents a day for working 12 hours. In 2001, the minimum, or lowest allowed, wage in the United States was $5.15 hour. About how much did the mill girls earn an hour?

  3 1/3 cents per hour

Step-by-step explanation:

The 1845 earnings per hour were ...

  (40 cents)/(12 hours) = (10/3) cents/hour = 3 1/3 cents/hour

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Comment on the rate of increase

That's an average rate of increase of wages of about 3.28% per year, substantially higher than the 2.04% average rate of inflation over that period. The mill girls' wage is roughly equivalent to $0.78 per hour in 2001 dollars.

so, converting firstly the mixed fractions to improper fractions and then "adding".

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: