Answer:
will decrease by 40 units.
Step-by-step explanation:
In supply function for good X the Price of W is Doubled. So any changein the price will increase the PW by double amount. The two times of price of good Y is subtracting from the supply function and price of the W will ultimately decrease the quantity demanded by double effect of each one dollar increase in it. So the supply of good X will decrease by 40 units.