Naomi has earned $54 mowing lawns the past two days. she worked 2.5 hours yesterday and 4.25 hours today. if namoni is paid the same amount for every hour she works, how much does she earn per hour to mow lawns?

First I added 2.5+4.25=6.75
Then do $54/6.75=$8
Answer=$8

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm