document.write( "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 \n" ); document.write( "

Algebra.Com's Answer #791662 by ikleyn(52787) $\"\"$ $\"About$

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document.write( "    100% - 55% - 50% - 40% + 30% + 20% + 12% - 10% = 7%.    ANSWER\r\n" );
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