Gem used
38 of the string to tie some presents. She threw away
311 of the remaining string. As a result, she had 35 cm of the string left. How much string did Gem have at first? Give your answer in cm.
Fraction of the string left after tying some presents
= 1 -
38=
58 Fraction of the remaining string left after throwing away
= 1 -
311=
811
Fraction of the total string left
=
58 ×
811=
511
Length of the string at first = 11 u
Length of the string left = 5 u
5 u = 35
1 u = 35 ÷ 5 = 7
Length of the string at first
= 11 u
= 11 x 7
= 77 cm
Answer(s): 77 cm