What were two major reasons computer technology was pushed by scientists and politicians of the 1950's?
A) To speed up cancer research and to build rockets to launch into out space.
B) To increase the number of polio vaccine recipients and to make the world banking system work faster.
C) To make the calculations required to build a nuclear bomb and help the US Census Bureau tabulate data.
D) To make the calculations required for presidential elections and to increase the output of commercial products.

the correct answer is:   "   3.6 % " .

          →   the unemployment rate is:   " 3.6 % " .

explanation:

to calculate the "unemployment rate" :

the "unemployment rate"   =

  [# of people unemployed] /   [working age population]   * 100 %   ;

                =   [9 million] / [250 million]     *   100 % ;

    →     note:   the units of "million" cancel out;

                    since:   " {million} / {million} = 1 " ;

                =   (9 / 250)   * 100 %   ;

                = 0.036 * 100 % ;

                =   3.6 %

answer:   the unemployment rate is:   " 3.6 % " .

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