x= the amount of rope. x(boxes)= the amount of rope used to tie the boxes together.
Then, we have the following equation:
x-(1/4)x-5/9(x-(1/4)x)=120 (x-4/x)-(5x/9)+(5x/36)=120 (1/3)x=120 x=120x3 x=360 cm
x(boxes)=(1/4)360 x(boxes)=360/4 x(boxes)=90 cm
What is the length of rope Mr. Young used to tie the boxes together? The lenght </span>of rope <span>Mr. Young used to tie the boxes together is: 90 cm. </span>