Lalita had 4.8 m of ribbon. She used 3/8 of the ribbon to tie a box. She used the remaining length of ribbon equally to tie 6 presents.
(A) How many centimetres of ribbon did she use to tie the box?
(B) How many centimetres of ribbon did she use to tie each present?
To find the length of ribbon Lalita used to tie the box, we will multiply the length of the ribbon she had by the fraction she used, which is 3/8:
4.8 m x 3/8 = 1.8 m
Since 1 meter is equal to 100 centimeters, we can multiply 1.8 by 100 to express it in centimeters:
1.8 m x 100 cm/m = 180 cm
Therefore, Lalita used 180 cm of ribbon to tie the box.
To find the length of ribbon Lalita used to tie each present, we will subtract the length of ribbon used to tie the box from the total length of ribbon she had:
4.8 m - 1.8 m = 3 m
Since she used the remaining length of ribbon equally to tie 6 presents, we will divide the total length of ribbon by the number of presents:
3 m / 6 = 0.5 m
Since 1 meter is equal to 100 centimeters, we can multiply 0.5 by 100 to express it in centimeters:
0.5 m x 100 cm/m = 50 cm
Therefore, Lalita used 50 cm of ribbon to tie each present.