Irene used
45 of the rope to tie some presents. She threw away
37 of the remaining rope. As a result, she had 16 cm of the rope left. How much rope did Irene have at first? Give your answer in cm.
Fraction of the rope left after tying some presents
= 1 -
45=
15 Fraction of the remaining rope left after throwing away
= 1 -
37=
47
Fraction of the total rope left
=
15 ×
47=
435
Length of the rope at first = 35 u
Length of the rope left = 4 u
4 u = 16
1 u = 16 ÷ 4 = 4
Length of the rope at first
= 35 u
= 35 x 4
= 140 cm
Answer(s): 140 cm