38 of a thread was used to tie a box. 16 cm was used for the thread knot.
- Find the length of the thread used.
- What was the original length of the thread?
(a)
Length of the thread used
= 12 x 2 + 11 x 2 + 10 x 4 + 16
= 102 cm
(b)
Original length of the thread = 8 u
Length used to tie the box = 3 u
3 u = 102 cm
1 u = 102 ÷ 3 = 34
Original length of the thread
= 8 u
= 34 x 8
= 272 cm
Answer(s): (a) 102 cm; (b) 272 cm