Zara used
16 of the string to tie some presents. She threw away
78 of the remaining string. As a result, she had 55 cm of the string left. How much string did Zara have at first? Give your answer in cm.
Fraction of the string left after tying some presents
= 1 -
16=
56 Fraction of the remaining string left after throwing away
= 1 -
78=
18
Fraction of the total string left
=
56 ×
18=
548
Length of the string at first = 48 u
Length of the string left = 5 u
5 u = 55
1 u = 55 ÷ 5 = 11
Length of the string at first
= 48 u
= 48 x 11
= 528 cm
Answer(s): 528 cm