document.write( "Question 50179: If someone goes on a vacation and buys souvenirs for $10, $3 and $.50 and spends exactly $100 and buys at least one of each item...how do I write an equation to show the relationship? \n" ); document.write( "

Algebra.Com's Answer #34343 by rchill(405) $\"\"$ $\"About$

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The unknowns are the items, even though we know the prices of each. Because there are 3 prices, there must 3 items, or unknowns. Let a represent the number of items that cost $10, b represent the number of items that cost $3, and c represent the number of items that cost $.50. Because these three totals add up to exactly $100, we have the equation $\"+10a+%2B+3b+%2B+.50c+=+100+\"$ . \n" ); document.write( "

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