Sarah used
310 of the rope to tie some presents. She threw away
79 of the remaining rope. As a result, she had 35 cm of the rope left. How much rope did Sarah 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 -
79=
29
Fraction of the total rope left
=
710 ×
29=
745
Length of the rope at first = 45 u
Length of the rope left = 7 u
7 u = 35
1 u = 35 ÷ 7 = 5
Length of the rope at first
= 45 u
= 45 x 5
= 225 cm
Answer(s): 225 cm