38 of a streamer was used to tie a box. 12 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
= 11 x 2 + 9 x 2 + 8 x 4 + 12
= 84 cm
(b)
Original length of the streamer = 8 u
Length used to tie the box = 3 u
3 u = 84 cm
1 u = 84 ÷ 3 = 28
Original length of the streamer
= 8 u
= 28 x 8
= 224 cm
Answer(s): (a) 84 cm; (b) 224 cm