document.write( "Question 1164151: How to find the number? The units digit of a two-digit number is three more
\n" ); document.write( "than the tens digit.The number is equal to four times the sum of the digits. Find the number. (Hint: We can represent a two digit number as 10t+u.) \n" ); document.write( "
Algebra.Com's Answer #788440 by Edwin McCravy(20063)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Instead of doing your problem, here is another one EXACTLY like yours\r\n" );
document.write( "in every way for you to use as a model in doing yours:\r\n" );
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\n" ); document.write( "How to find the number? The units digit of a two-digit number is five more
\n" ); document.write( "than the tens digit. The number is equal to three times the sum of the
\n" ); document.write( "digits. Find the number.(Hint:we can represent a two digit number as 10t+u.)
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document.write( "t = tens digit\r\n" );
document.write( "u = units digit\r\n" );
document.write( "10t+u = the two-digit number\r\n" );
document.write( "t+u = sum of digits\r\n" );
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\n" ); document.write( "The units digit of a two-digit number is five more than the tens digit.
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document.write( "units digit = tens digit + 5\r\n" );
document.write( "      u     =     t      + 5\r\n" );
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document.write( "u = t + 5\r\n" );
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\n" ); document.write( "The number is equal to three times the sum of the digits.
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document.write( "The number = 3 times sum of digits\r\n" );
document.write( "  10t+u    = 3   ∙     (t+u)\r\n" );
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document.write( "10t + u = 3(t + u)\r\n" );
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\n" ); document.write( "Find the number.
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document.write( "Substitute t + 5 for u in\r\n" );
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document.write( "    10t + u = 3(t + u)\r\n" );
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document.write( "10t + t + 5 = 3(t + t + 5)\r\n" );
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document.write( "    11t + 5 = 3(2t + 5)\r\n" );
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document.write( "    11t + 5 = 6t + 15\r\n" );
document.write( "     \r\n" );
document.write( "         5t = 10\r\n" );
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document.write( "          t = 2\r\n" );
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document.write( "Substitute 2 for t in  \r\n" );
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document.write( "          u = t + 5\r\n" );
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document.write( "          u = 2 + 5\r\n" );
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document.write( "          u = 7\r\n" );
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document.write( "The tens (first) digit is 2 and the units (second) digit is 7.\r\n" );
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document.write( "So the number is 27.\r\n" );
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document.write( "Now do your problem the exact same way.\r\n" );
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document.write( "Edwin
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