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3. Political turbulences and the pandemic signicantly affected Singapore's consumer condence in 2020 and 2021. Now, that the pandemic is under control in Singapore, the marginal propensity to consume has increased from 0.5 to 0.7. 3. Use the consumption model to assess the effects of an increase in marginal propensity to consume (MPG) on overall consumption. Use the model (math) and the graphs. Explain. b. How it will affect overall aggregate demand and income (Y)