document.write( "Question 88083: how can i Identify the rate, base, and amount in the following applications. Do not solve the applications at this point PLEASE HELP
\n" ); document.write( "1. The electricity costs of a business decreased from $12,000 one year to $10,920 the next. What is the rate of decrease?\r
\n" ); document.write( "\n" ); document.write( "2.If the total bill at a restaurant, including a 15% tip, is $65.32, what was the cost of the meal alone?\r
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Algebra.Com's Answer #64046 by ankor@dixie-net.com(22740)\"\" \"About 
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1. The electricity costs of a business decreased from $12,000 one year to $10,920 the next. What is the rate of decrease?
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\n" ); document.write( "Explaining what we are doing here:
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\n" ); document.write( "Find the amt the bill decreased: 12000 - 10920 = 1080
\n" ); document.write( "Find the Per cent decrease: \"1080%2F12000\" * 100 = 9%
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\n" ); document.write( "Putting this all in one equation:
\n" ); document.write( "% decrease = \"%28%2812000-10920%29%29%2F12000\" * 100
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\n" ); document.write( "2.If the total bill at a restaurant, including a 15% tip, is $65.32, what was the cost of the meal alone?
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\n" ); document.write( "Let x = cost of the meal; tax will be .15x then, right?
\n" ); document.write( "We know:
\n" ); document.write( "Meal cost + tax = total bill
\n" ); document.write( " x + .15x = 65.32
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\n" ); document.write( "1.15x = 65.32; added up the x's
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\n" ); document.write( "x = 65.32/1.15; divide both sides by 1.15
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\n" ); document.write( "x = $56.80 is the cost of the meal
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\n" ); document.write( "Check our solution:
\n" ); document.write( ".15 * 56.80 = $8.52 is the tax
\n" ); document.write( "Tax + meal cost:
\n" ); document.write( "8.52 + 56.80 = 65.32
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\n" ); document.write( "Did this make sense to you?
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