Dana used
47 of the ribbon to tie some presents. She threw away
57 of the remaining ribbon. As a result, she had 36 cm of the ribbon left. How much ribbon did Dana have at first? Give your answer in cm.
Fraction of the ribbon left after tying some presents
= 1 -
47=
37 Fraction of the remaining ribbon left after throwing away
= 1 -
57=
27
Fraction of the total ribbon left
=
37 ×
27=
649
Length of the ribbon at first = 49 u
Length of the ribbon left = 6 u
6 u = 36
1 u = 36 ÷ 6 = 6
Length of the ribbon at first
= 49 u
= 49 x 6
= 294 cm
Answer(s): 294 cm