Victoria used
25 of the rope to tie some presents. She threw away
78 of the remaining rope. As a result, she had 30 cm of the rope left. How much rope did Victoria have at first? Give your answer in cm.
Fraction of the rope left after tying some presents
= 1 -
25=
35 Fraction of the remaining rope left after throwing away
= 1 -
78=
18
Fraction of the total rope left
=
35 ×
18=
340
Length of the rope at first = 40 u
Length of the rope left = 3 u
3 u = 30
1 u = 30 ÷ 3 = 10
Length of the rope at first
= 40 u
= 40 x 10
= 400 cm
Answer(s): 400 cm