23 of a rope was used to tie a box. 14 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
= 12 x 2 + 10 x 2 + 9 x 4 + 14
= 94 cm
(b)
Original length of the rope = 3 u
Length used to tie the box = 2 u
2 u = 94 cm
1 u = 94 ÷ 2 = 47
Original length of the rope
= 3 u
= 47 x 3
= 141 cm
Answer(s): (a) 94 cm; (b) 141 cm