35 of a streamer was used to tie a box. 11 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 + 7 x 2 + 6 x 4 + 11
= 69 cm
(b)
Original length of the streamer = 5 u
Length used to tie the box = 3 u
3 u = 69 cm
1 u = 69 ÷ 3 = 23
Original length of the streamer
= 5 u
= 23 x 5
= 115 cm
Answer(s): (a) 69 cm; (b) 115 cm