37 of a rope was used to tie a box. 9 cm was used for the rope knot.
- Find the length of the rope used.
- What was the original length of the rope?
(a)
Length of the rope used
= 11 x 2 + 10 x 2 + 9 x 4 + 9
= 87 cm
(b)
Original length of the rope = 7 u
Length used to tie the box = 3 u
3 u = 87 cm
1 u = 87 ÷ 3 = 29
Original length of the rope
= 7 u
= 29 x 7
= 203 cm
Answer(s): (a) 87 cm; (b) 203 cm