Betty used
49 of the rope to tie some presents. She threw away
611 of the remaining rope. As a result, she had 475 cm of the rope left. How much rope did Betty have at first? Give your answer in cm.
Fraction of the rope left after tying some presents
= 1 -
49=
59 Fraction of the remaining rope left after throwing away
= 1 -
611=
511
Fraction of the total rope left
=
59 ×
511=
2599
Length of the rope at first = 99 u
Length of the rope left = 25 u
25 u = 475
1 u = 475 ÷ 25 = 19
Length of the rope at first
= 99 u
= 99 x 19
= 1881 cm
Answer(s): 1881 cm