23 of a streamer was used to tie a box. 8 cm was used for the streamer knot.
- Find the length of the streamer used.
- What was the original length of the streamer?
(a)
Length of the streamer used
= 10 x 2 + 9 x 2 + 8 x 4 + 8
= 78 cm
(b)
Original length of the streamer = 3 u
Length used to tie the box = 2 u
2 u = 78 cm
1 u = 78 ÷ 2 = 39
Original length of the streamer
= 3 u
= 39 x 3
= 117 cm
Answer(s): (a) 78 cm; (b) 117 cm