Eva used
37 of the wire to tie some presents. She threw away
611 of the remaining wire. As a result, she had 320 cm of the wire left. How much wire did Eva have at first? Give your answer in cm.
Fraction of the wire left after tying some presents
= 1 -
37=
47 Fraction of the remaining wire left after throwing away
= 1 -
611=
511
Fraction of the total wire left
=
47 ×
511=
2077
Length of the wire at first = 77 u
Length of the wire left = 20 u
20 u = 320
1 u = 320 ÷ 20 = 16
Length of the wire at first
= 77 u
= 77 x 16
= 1232 cm
Answer(s): 1232 cm