Grade salary gs-1 $1,461 gs-2 $1,591 gs-3 $1,793 gs-4 $2,013 gs-5 $2,252 the table shows the monthly salaries for different grades of u. s. government employees. find the range of the data set a. $1,822 c. $661 b. $552 d. $791

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