Thanks for the reply.
I'm not sure about your notation. If you assume Consumption Expenditure (=0.6Y) relates only to domestic goods - which it appears you do as you've labelled it Cd - then we shouldn't need to net off imports (0.3Y).
If there's a mixup in your notation, and you're referring to total consumption (i.e. domestic and imports) in the first term, then I understand now why we take total consumption to be 0.5*0.6Y, but shouldn't we also do the same to imports? I.e. imports = 0.5*0.3Y.
Which gives us:
Y = 0.5*0.6Y + 200 + 500 + 300 - 0.5*0.3Y
Y = 1000 + 0.15Y
Y = 1,176.47 ................different to the answer I first calculated, but still not what the answer says it should be.
The logic seems to be (from both questions) that the Consumption Expenditure factor relates to disposable income, while the Import Expenditure factor relates to total income. I find that hard to agree with, but that's how it seems.
Last edited by a moderator: Apr 15, 2012