Mary used
15 of the wire to tie some presents. She threw away
611 of the remaining wire. As a result, she had 60 cm of the wire left. How much wire did Mary have at first? Give your answer in cm.
Fraction of the wire left after tying some presents
= 1 -
15=
45 Fraction of the remaining wire left after throwing away
= 1 -
611=
511
Fraction of the total wire left
=
45 ×
511=
411
Length of the wire at first = 11 u
Length of the wire left = 4 u
4 u = 60
1 u = 60 ÷ 4 = 15
Length of the wire at first
= 11 u
= 11 x 15
= 165 cm
Answer(s): 165 cm