6. Jones spends all his income on two goods, X and Y. The prices he paid and the quantities he consumed last year are as follows: PX  15, X  20, PY  25, and Y  30. If the prices next year are PX  6 and PY  30, and Jones’s income is 1020, will he be better or worse off than he was in the previous year? (Assume that his tastes do not change.)