document.write( "Question 504009: tasha bought salads at $2.75 each and cartons of milk at $.80 each. the total cost was $16.15. she bought 8 items, how many of each did she buy ? \n" ); document.write( "

Algebra.Com's Answer #339477 by oberobic(2304) $\"\"$ $\"About$

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s = number of salads purchased
\n" ); document.write( "275s = value of the salads in cents
\n" ); document.write( "m = number of cartons of milk purchased
\n" ); document.write( "80m = value of the milk in cents
\n" ); document.write( ".
\n" ); document.write( "275s + 80m = 1615
\n" ); document.write( ".
\n" ); document.write( "s + m = 8
\n" ); document.write( "so
\n" ); document.write( "s = 8-m
\n" ); document.write( ".
\n" ); document.write( "substitute
\n" ); document.write( ".
\n" ); document.write( "275(8-m) + 80m = 1615
\n" ); document.write( "2200 -275m + 80m = 1615
\n" ); document.write( ".
\n" ); document.write( "collect terms and tidy up
\n" ); document.write( ".
\n" ); document.write( "-195m = -585
\n" ); document.write( "m = 3
\n" ); document.write( ".
\n" ); document.write( "She bought 3 cartons of milk.
\n" ); document.write( ".
\n" ); document.write( "s = 8-m
\n" ); document.write( "s = 5
\n" ); document.write( ".
\n" ); document.write( "She bought 5 salads.
\n" ); document.write( ".
\n" ); document.write( "Always check your work.
\n" ); document.write( ".
\n" ); document.write( "5(275) = 1375
\n" ); document.write( "3(80) = 240
\n" ); document.write( "1375 + 240 = 1615
\n" ); document.write( "Correct.
\n" ); document.write( ".
\n" ); document.write( "Answer: Tasha bought 3 cartons of milk and 5 salads.
\n" ); document.write( ".
\n" ); document.write( "Done. \n" ); document.write( "

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