29 of a ribbon was used to tie a box. 14 cm was used for the ribbon knot.
- Find the length of the ribbon used.
- What was the original length of the ribbon?
(a)
Length of the ribbon used
= 12 x 2 + 11 x 2 + 9 x 4 + 14
= 96 cm
(b)
Original length of the ribbon = 9 u
Length used to tie the box = 2 u
2 u = 96 cm
1 u = 96 ÷ 2 = 48
Original length of the ribbon
= 9 u
= 48 x 9
= 432 cm
Answer(s): (a) 96 cm; (b) 432 cm