Irene used
16 of the ribbon to tie some presents. She threw away
78 of the remaining ribbon. As a result, she had 95 cm of the ribbon left. How much ribbon did Irene have at first? Give your answer in cm.
Fraction of the ribbon left after tying some presents
= 1 -
16=
56 Fraction of the remaining ribbon left after throwing away
= 1 -
78=
18
Fraction of the total ribbon left
=
56 ×
18=
548
Length of the ribbon at first = 48 u
Length of the ribbon left = 5 u
5 u = 95
1 u = 95 ÷ 5 = 19
Length of the ribbon at first
= 48 u
= 48 x 19
= 912 cm
Answer(s): 912 cm