One shelf in the New York Public library can hold 63 books. The New York Public library has 69 books. Enter the number of shelfs needed to store all of the books away.

2 shelves, with a dissapointingly large ammount of empty space on the second one

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

I’m a smart person so that’s why i think it was 6