Agrocery store sells peanuts in bulk foods. the price for 5 lb of peanuts is $8.00. brian said, “the ratio of dollars to pounds of peanuts is 8: 5. that is $1.60 per pound.” carla said, “the ratio of pounds of peanuts to dollars is 5: 8. that is 0.625 of a pound per dollar.” who is correct?

Carla is correct using a calculator to check 

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