Answer:
2Y is the number of scarfs of length half metre that can be made from Y metres of cloth.
Explanation:
To find the number of scarfs of length half metre that can be made from Y metre of cloth.
As per the given condition:
we have:

then;
Number of scarfs that can be made from Y metre of cloth =

Therefore, number of scarfs of length half metre that can be made from Y metres of cloth is, 2Y