How many pieces of carpet can be cut from the roll if each piece is to be 2/5 meter long?

Answer 1

depends on the length of the roll, which you did not state
Whatever it is, divide it by 2/5 m

e.g. suppose it is 30 m long
number of pieces
= 30/(2/5)
= 30(5/2)
= 75 pieces

Answer 2

A roll of carpet is three meter long. How many pieces of carpet can be cut into the role if each piece is to be 3/4 meter long ?