If the world real interest rate were to fall below the rate at which domestic saving and investment would be equal ________
A) saving would be greater than investment so the economy would be running a trade deficit
B) investment would be greater than saving so the economy would be running a trade deficit
C) investment would be greater than saving so the economy would be running a trade surplus
D) saving would be greater than investment so the economy would be running a trade surplus
E) none of the above
B
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A perfectly competitive firm is producing at the point where its marginal cost equals its marginal revenue. If the firm boosts its output, its total revenue will
A) rise and its total variable cost will rise even more. B) rise and its total variable cost will rise, but not by as much. C) fall but its total variable cost will rise. D) fall and its total variable cost will fall, but not by as much.
According to UN projections, what proportion of the world's urban population will reside in the urban areas of developing countries by 2025?
(a) two fifths. (b) one half. (c) two thirds. (d) four fifths.