Supply
Lai Yew Wah Tutorial 3 solutions Group 5 Chan Wooi Wang ( S-GSM0028/09 ) Chu Wee Liang ( S-GSM0039/09 ) Lee Yee Ling ( S-GSM0087/09 ) Questions Q 5. What would you expect to happen to spending on food at home and spending on food restaurants during a decline a decline in economic activity ? How would income elasticity of demand help explain these things ? Q ( Demand ) QS0 Superior QI1 QI0 Inferior QS1 Y1 Y0 Y ( Income ) During the decline in economy activity, the spending power will decrease which is similar as the decline in income. Home food which is economical are inferior goods while restaurant food which is much more costly are superior goods. Therefore from the income elasticity of demand curve, the demand for home food will increase from QI0 to QI1 while the demand for restaurant food will decrease from QS0 to QS1 when the income decreases from Y0 to Y1. Q9. The immediate effect of gasoline price increases in the aftermath of the Persian Gulf crisis in August 1990 on gasoline consumption was not very significant. Would you expect the consumption of gasoline to be more severely affected if these higher prices remained in effect for a year or more ? Why or why not ?