34 of a wire was used to tie a box. 15 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
= 10 x 2 + 8 x 2 + 6 x 4 + 15
= 75 cm
(b)
Original length of the wire = 4 u
Length used to tie the box = 3 u
3 u = 75 cm
1 u = 75 ÷ 3 = 25
Original length of the wire
= 4 u
= 25 x 4
= 100 cm
Answer(s): (a) 75 cm; (b) 100 cm