The figure shows the flows of income and expenditure in an economy.
In 2008, Q was $1,200 billion, U was $200 billion, W was
$500 billion, R was $100 billion, and Z was $80 billion.
Calculate investment and saving.
Investment is $ billion.

The figure shows the flows of income and expenditure in an economy In 2008 Q was 1200 billion U was 200 billion W was 500 billion R was 100 billion and Z was 80 class=