Shannon used
38 of the thread to tie some presents. She threw away
38 of the remaining thread. As a result, she had 200 cm of the thread left. How much thread did Shannon have at first? Give your answer in cm.
Fraction of the thread left after tying some presents
= 1 -
38=
58 Fraction of the remaining thread left after throwing away
= 1 -
38=
58
Fraction of the total thread left
=
58 ×
58=
2564
Length of the thread at first = 64 u
Length of the thread left = 25 u
25 u = 200
1 u = 200 ÷ 25 = 8
Length of the thread at first
= 64 u
= 64 x 8
= 512 cm
Answer(s): 512 cm