Question

Q4. Sara had a 70 cm long ribbon. She joined another piece of
ribbon to make it 2 m 40 cm. What is the length of the other piece
of ribbon?​

Answer 1

Step-by-step explanation:

Sara had a 70 cm long ribbon.

She want to be 2m 40 cm .

let 2m=200cm

i.e, 200cm+40cm=240cm

let the another piece as 's'

240cm-70cm=s

s=170cm

So,the another ribbon is 170 cm