document.write( "Question 966793: a mother has to buy 18 chocolates for some children. some cost 3.50 and the remainder cost 5.70. calculate the least number of chocolates she can buy at 3.50 each if the total cost to her must be less than or equal to 76.50 \n" ); document.write( "

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a mother has to buy 18 chocolates for some children. some cost 3.50 and the remainder cost 5.70. calculate the least number of chocolates she can buy at 3.50 each if the total cost to her must be less than or equal to 76.50
\n" ); document.write( "***
\n" ); document.write( "let x=number of chocolates that cost 3.50 each
\n" ); document.write( "18-x=number of chocolates that cost 5.70 each
\n" ); document.write( "3.50x+5.70(18-x)≤76.50
\n" ); document.write( "3.50x+102.60-5.70x≤76.50
\n" ); document.write( "-2.20x≤-26.10
\n" ); document.write( "x≥11.86
\n" ); document.write( "The least number of chocolates mother can buy at 3.50? 12 \n" ); document.write( "

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