Eva used
15 of the rope to tie some presents. She threw away
47 of the remaining rope. As a result, she had 156 cm of the rope left. How much rope did Eva have at first? Give your answer in cm.
Fraction of the rope left after tying some presents
= 1 -
15=
45 Fraction of the remaining rope left after throwing away
= 1 -
47=
37
Fraction of the total rope left
=
45 ×
37=
1235
Length of the rope at first = 35 u
Length of the rope left = 12 u
12 u = 156
1 u = 156 ÷ 12 = 13
Length of the rope at first
= 35 u
= 35 x 13
= 455 cm
Answer(s): 455 cm