Opal used
27 of the streamer to tie some presents. She threw away
78 of the remaining streamer. As a result, she had 50 cm of the streamer left. How much streamer did Opal have at first? Give your answer in cm.
Fraction of the streamer left after tying some presents
= 1 -
27=
57 Fraction of the remaining streamer left after throwing away
= 1 -
78=
18
Fraction of the total streamer left
=
57 ×
18=
556
Length of the streamer at first = 56 u
Length of the streamer left = 5 u
5 u = 50
1 u = 50 ÷ 5 = 10
Length of the streamer at first
= 56 u
= 56 x 10
= 560 cm
Answer(s): 560 cm