document.write( "Question 1124209: two numbers are in the ratio 2:5. if their difference is 48,what is the bigger number? \n" ); document.write( "
Algebra.Com's Answer #740555 by Theo(13342)\"\" \"About 
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two numbers are in the ratio of 2:5.
\n" ); document.write( "their difference is 48.
\n" ); document.write( "what is the bigger of the two numbers?\r
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\n" ); document.write( "\n" ); document.write( "let the numbers be A and B.
\n" ); document.write( "let the ratio be A:B = 2:5
\n" ); document.write( "this can also be written at A/B = 2/5\r
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\n" ); document.write( "\n" ); document.write( "solve for A to get A = 2/5 * B
\n" ); document.write( "this makes B the larger number.\r
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\n" ); document.write( "\n" ); document.write( "therefore B - A = 48\r
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\n" ); document.write( "\n" ); document.write( "solve for B to get B = A + 48\r
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\n" ); document.write( "\n" ); document.write( "you have A = 2/5 * B and you have B = A + 48\r
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\n" ); document.write( "\n" ); document.write( "replace B in the first equation with its equivalent value of A + 48 from the second equation to get:\r
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\n" ); document.write( "\n" ); document.write( "A = 2/5 * B becomes A = 2/5 * (A + 48)
\n" ); document.write( "simplify to get A = 2/5 * A + 2/5 * 48
\n" ); document.write( "subtract 2/5 * A from both sides of this equation to get:
\n" ); document.write( "A - 2/5 * A = 2/5 * 48
\n" ); document.write( "combine like terms to get 3/5 * A = 2/5 * 48
\n" ); document.write( "multiply both sides of this equation by 5/3 to get:
\n" ); document.write( "5/3 * 3/5 * A = 5/3 * 2/5 * 48
\n" ); document.write( "simplify to get:
\n" ); document.write( "A = 10/15 * 48
\n" ); document.write( "solve for A to get A = 32\r
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\n" ); document.write( "\n" ); document.write( "you have A = 32 and B = 80\r
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\n" ); document.write( "\n" ); document.write( "B = A + 48 gets you B = 32 + 48 = 80\r
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\n" ); document.write( "\n" ); document.write( "A/B = 2/5 becomes 32/80 = 2/5
\n" ); document.write( "divide 32 by 16 to get 2 and divide 80 by 16 to get 5.
\n" ); document.write( "this means that 32/80 is equivalent to 2/5 which means the ratio of A/B is correct.\r
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\n" ); document.write( "\n" ); document.write( "you could also confirm by cross multiplying.
\n" ); document.write( "cross multiply 2/5 = 32/80 to get 160 = 160, confirming the ratios are equivalent.\r
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\n" ); document.write( "\n" ); document.write( "your solution is that the bigger number is 80.\r
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