At P = $100, there 50 tons of Garden-Rich fertilizer are demanded within Patagonia; at P = $80, there quantity demanded is 70 tons. Therefore price elasticity of demand for fertilizer: (w) 5/8. (x) 3/2. (y) 4/5. (z) 2/3.
Hello guys I want your advice. Please recommend some views for above economics problems.