23 of a wire was used to tie a box. 8 cm was used for the wire knot.
- Find the length of the wire used.
- What was the original length of the wire?
(a)
Length of the wire used
= 12 x 2 + 10 x 2 + 8 x 4 + 8
= 84 cm
(b)
Original length of the wire = 3 u
Length used to tie the box = 2 u
2 u = 84 cm
1 u = 84 ÷ 2 = 42
Original length of the wire
= 3 u
= 42 x 3
= 126 cm
Answer(s): (a) 84 cm; (b) 126 cm