document.write( "Question 475145: This question read: Without knowing sales tax, find tax on $1500, if tax on $350 is $28. Use proportion to explain. Give real life example of a ratio and a rate. Then explain the difference of each. Why is one a rate and the other a ratio?
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document.write( " Describe steps involved to solve the problem \n" );
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Algebra.Com's Answer #325794 by Theo(13342)![]() ![]() You can put this solution on YOUR website! you want to find the tax on 1500. \n" ); document.write( "tax on 350 is 28 dollars. \n" ); document.write( "rate of tax on 350 is 28/350 = .08 \n" ); document.write( "apply this rate to 1500 and you get .08 * 1500 = 120. \n" ); document.write( "I found the rate and then applied it. \n" ); document.write( "If I did it another way, then I would be taking the ratio and applying it. \n" ); document.write( "The other way would be done as follows: \n" ); document.write( "28/350 = x/1500 \n" ); document.write( "Now this is a ratio and not a rate since I don't know the rate because I didn't solve for it. \n" ); document.write( "I multiply both sides of this equation by 1500 to get: \n" ); document.write( "x = 28/350 * 1500 = 120. \n" ); document.write( "I get the same tax. \n" ); document.write( "In the first case, I solved for the rate and then applied the rate to $1500 in order to get the tax of $120. \n" ); document.write( "In the second case, I applied the ratio of 28 is to 350 as x is to 1500 in order to derive the tax. \n" ); document.write( "It's a technicality. \n" ); document.write( "In the first case I knew what the rate was because I solved for it. \n" ); document.write( "In the second case I didn't know what the rate was but applied the ratio to find the tax. \n" ); document.write( "Note that in the second case I didn't know what the rate was even though the ratio of 28/350 could have been used to solve for the rate if I wanted to find out what that was first.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |