When the price of thermal underwear is increased from $12 to $18 per pair, because of the quantity of cross country snow skis to decline by 1,200 to 800 pairs annual, such goods are ____ and the price cross elasticity of demand equivalents ____. (1) luxuries; 2.00 (2) complementary; -1.00 (3) substitutes; -2.00 (4) normal goods; 0.500 (5) substitutes; 1.00
Can someone explain/help me with best solution about problem of economic...