37 of a thread was used to tie a box. 11 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 + 10 x 2 + 8 x 4 + 11
= 87 cm
(b)
Original length of the thread = 7 u
Length used to tie the box = 3 u
3 u = 87 cm
1 u = 87 ÷ 3 = 29
Original length of the thread
= 7 u
= 29 x 7
= 203 cm
Answer(s): (a) 87 cm; (b) 203 cm