Eva used
25 of the string to tie some presents. She threw away
57 of the remaining string. As a result, she had 36 cm of the string left. How much string did Eva have at first? Give your answer in cm.
Fraction of the string left after tying some presents
= 1 -
25=
35 Fraction of the remaining string left after throwing away
= 1 -
57=
27
Fraction of the total string left
=
35 ×
27=
635
Length of the string at first = 35 u
Length of the string left = 6 u
6 u = 36
1 u = 36 ÷ 6 = 6
Length of the string at first
= 35 u
= 35 x 6
= 210 cm
Answer(s): 210 cm