25 of a streamer was used to tie a box. 20 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 + 10 x 2 + 8 x 4 + 20
= 94 cm
(b)
Original length of the streamer = 5 u
Length used to tie the box = 2 u
2 u = 94 cm
1 u = 94 ÷ 2 = 47
Original length of the streamer
= 5 u
= 47 x 5
= 235 cm
Answer(s): (a) 94 cm; (b) 235 cm