Emily used
110 of the thread to tie some presents. She threw away
611 of the remaining thread. As a result, she had 126 cm of the thread left. How much thread did Emily have at first? Give your answer in cm.
Fraction of the thread left after tying some presents
= 1 -
110=
910 Fraction of the remaining thread left after throwing away
= 1 -
611=
511
Fraction of the total thread left
=
910 ×
511=
922
Length of the thread at first = 22 u
Length of the thread left = 9 u
9 u = 126
1 u = 126 ÷ 9 = 14
Length of the thread at first
= 22 u
= 22 x 14
= 308 cm
Answer(s): 308 cm