Zoe used
110 of the streamer to tie some presents. She threw away
38 of the remaining streamer. As a result, she had 90 cm of the streamer left. How much streamer did Zoe have at first? Give your answer in cm.
Fraction of the streamer left after tying some presents
= 1 -
110=
910 Fraction of the remaining streamer left after throwing away
= 1 -
38=
58
Fraction of the total streamer left
=
910 ×
58=
916
Length of the streamer at first = 16 u
Length of the streamer left = 9 u
9 u = 90
1 u = 90 ÷ 9 = 10
Length of the streamer at first
= 16 u
= 16 x 10
= 160 cm
Answer(s): 160 cm