Question

sita bought a blue ribbon of length 7/8 m. she cut 3/5 of it. what was the length in millimetres, of the ribbon that she cut?

Answer 1

length of the ribbon she cut=7/8-3/5
LCM of 8 and 5=40
35/40-24/40
11/40,ans

Answer 2

Length of ribbon=7/8m

Length used by sita =3/5m

Remaining length of ribbon=

= 7/8-3/5

=35-24/40

=11/40 m

1 m= 10000mm

Then

11/40*10000

=11*250

= 2750 mm