Kylie used
310 of the rope to tie some presents. She threw away
611 of the remaining rope. As a result, she had 70 cm of the rope left. How much rope did Kylie have at first? Give your answer in cm.
Fraction of the rope left after tying some presents
= 1 -
310=
710 Fraction of the remaining rope left after throwing away
= 1 -
611=
511
Fraction of the total rope left
=
710 ×
511=
722
Length of the rope at first = 22 u
Length of the rope left = 7 u
7 u = 70
1 u = 70 ÷ 7 = 10
Length of the rope at first
= 22 u
= 22 x 10
= 220 cm
Answer(s): 220 cm