You create a market-value-weighted stock index using stocks X and Y.

In period 0:

Stock X price was $50/share and there are 20 shares of X.

Stock Y price was $100/share and there are 20 shares of Y.

In period 1:

Stock X price was $60/share and there are 20 shares of X.

Stock Y price was $100/share and there are 20 shares of Y.

What was the percent return on the index from period 0 to period 1?

		6.67%
		10%
		20%
		5%