Kathy used
38 of the streamer to tie some presents. She threw away
57 of the remaining streamer. As a result, she had 80 cm of the streamer left. How much streamer did Kathy have at first? Give your answer in cm.
Fraction of the streamer left after tying some presents
= 1 -
38=
58 Fraction of the remaining streamer left after throwing away
= 1 -
57=
27
Fraction of the total streamer left
=
58 ×
27=
528
Length of the streamer at first = 28 u
Length of the streamer left = 5 u
5 u = 80
1 u = 80 ÷ 5 = 16
Length of the streamer at first
= 28 u
= 28 x 16
= 448 cm
Answer(s): 448 cm