27 of a streamer was used to tie a box. 16 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 + 16
= 74 cm
(b)
Original length of the streamer = 7 u
Length used to tie the box = 2 u
2 u = 74 cm
1 u = 74 ÷ 2 = 37
Original length of the streamer
= 7 u
= 37 x 7
= 259 cm
Answer(s): (a) 74 cm; (b) 259 cm