SOLUTION: in a survey concerning the use of three different brand of calculators, it was found that 55% use calculator a, 50% use calculator b, 40% use calculator c, 30% use calculator a and
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Question 1167073: in a survey concerning the use of three different brand of calculators, it was found that 55% use calculator a, 50% use calculator b, 40% use calculator c, 30% use calculator a and b, 20% use calculator a and c, 12% use calculator b and c and only 10% use all the three calculators. what percentages of the population do not use calculators Answer by ikleyn(52786) (Show Source):
