document.write( "Question 174604: An ice cream stand sells single-dip cones for $1.75 and double-dip cones for $2.25. Yesterday, 500 cones were sold for $900. How many single-dip and how many double-dip cones were sold? \n" ); document.write( "

Algebra.Com's Answer #129618 by Mathtut(3670) $\"\"$ $\"About$

You can put this solution on YOUR website!
let the number of single and double cones sold, be s and d respectively
\n" ); document.write( ":
\n" ); document.write( "s+d=500............eq 1
\n" ); document.write( "1.75s+2.25d=900....eq 2
\n" ); document.write( ":
\n" ); document.write( "re write eq 1 to s=500-d and plug that value into eq 2
\n" ); document.write( ":
\n" ); document.write( "1.75(500-d)+2.25d=900
\n" ); document.write( ":
\n" ); document.write( "875-1.75d+2.25d=900
\n" ); document.write( ":
\n" ); document.write( ".5d=25
\n" ); document.write( ":
\n" ); document.write( " $\"highlight%28d=50%29\"$ number of doubles sold
\n" ); document.write( ":
\n" ); document.write( " $\"highlight%28s=500-50=450%29\"$ number of singles sold \n" ); document.write( "

\n" );