Fanny used
110 of the wire to tie some presents. She threw away
38 of the remaining wire. As a result, she had 72 cm of the wire left. How much wire did Fanny have at first? Give your answer in cm.
Fraction of the wire left after tying some presents
= 1 -
110=
910 Fraction of the remaining wire left after throwing away
= 1 -
38=
58
Fraction of the total wire left
=
910 ×
58=
916
Length of the wire at first = 16 u
Length of the wire left = 9 u
9 u = 72
1 u = 72 ÷ 9 = 8
Length of the wire at first
= 16 u
= 16 x 8
= 128 cm
Answer(s): 128 cm