79) In January 2007, the price of petrol was $1.13 a litre. By September 2008, the price had increased to $1.55 a litre. Assume that there were no changes in average income, population, or any other influence on buying plans. How would you expect the rise in the price of petrol to affect a. The demand for petrol? Explain your…
Words 26234 - Pages 105