in 1970 there were 8,902 women stockbrokers in the united states . by 1978 the number had increased to 21,947 . approximately what was the percent increase ?
"the percent increase is ( 21947 - 8902 ) / 8902 = 13045 / 8902 = 1.47 so the approximate answer is c"
divide(subtract(21,947, 8,902), 8,902)