Approximately what percentage of the world population experiences scarcity?

Data on convergence suggests:

a. poor countries are converging with the median country. b. rich countries are converging with other rich countries. c. only countries with the same populations are convergine. d. none of the above.

The difference between consumption spending and disposable income _____

a. decreases as income increases b. stays proportionally the same as income increases c. decreases if the interest rate increases d. equals the amount of taxes paid e. equals saving