the price of a car rises by 10 percent. the price elasticity of demand for cars is 1.2 the price elasticity of demand for trucks is 2.5. the cross elasticity of demand for with respect to the price of a car is 0.5. given the rise in the price of a car, what percentage change in the price of a truck will leave the quantity demanded of trucks ​unchanged? the price of a truck will rise by percent. quizlet