Answer:
1. Investment spending is 175 million
2. National Saving is 175 million
3. Saving is the same as investment
Explanation:
Y = 350.00; C = 100.00; T = 60.00; G = 75.00
1. I = Y - C - G = 175.00
2. S = I = 175.00
3. Closed economy, national saving equals investment (no import export means no saving or debt with rest of world)