Lucy used
17 of the streamer to tie some presents. She threw away
37 of the remaining streamer. As a result, she had 168 cm of the streamer left. How much streamer did Lucy have at first? Give your answer in cm.
Fraction of the streamer left after tying some presents
= 1 -
17=
67 Fraction of the remaining streamer left after throwing away
= 1 -
37=
47
Fraction of the total streamer left
=
67 ×
47=
2449
Length of the streamer at first = 49 u
Length of the streamer left = 24 u
24 u = 168
1 u = 168 ÷ 24 = 7
Length of the streamer at first
= 49 u
= 49 x 7
= 343 cm
Answer(s): 343 cm