When the price of salad was $5, a cafeteria sold 50 packets of salad dressing a day at $0.50 per packet. When they increased the price of salad by 40%, but kept the dressing at the same price, they sold 50% fewer packets of salad dressing. The cross-price elasticitycalculated using the cross-price elasticity formulais __________ and the goods are __________.

0.5; substitutes

-0.5; complements

1.25; substitutes

-1.25; complements