document.write( "Question 825998: The units digit of a 3 digit number is one more than twice the tens digit while the tens digit is twice that of the hundreds digit. If the hundreds digit and the unit digit are interchanged, the number formed is 21 more than 4 times the original number. Find the number.
\n" ); document.write( " I asked this last time. But it wasn't answered. Well I guess, I will try it again. Hoping somebody will notice this. I really need the answer. As in A.S.A.P. Can you solve this. Pleassee?? :( \n" ); document.write( "

Algebra.Com's Answer #497764 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Call the units digit $\"+u+\"$
\n" ); document.write( "Call the tens digit $\"+t+\"$
\n" ); document.write( "Call the hundreds digit $\"+h+\"$
\n" ); document.write( "--------------------------
\n" ); document.write( "(1) $\"+u+=+2t+%2B+1+\"$
\n" ); document.write( "(2) $\"+t+=+2h+\"$
\n" ); document.write( "----------------
\n" ); document.write( "The actual value of the number is:
\n" ); document.write( " $\"+100h+%2B+10t+%2B+u+\"$
\n" ); document.write( "--------------------
\n" ); document.write( "The value of the number with the
\n" ); document.write( "digits reversed is:
\n" ); document.write( " $\"+100u+%2B+10t+%2B+h+\"$
\n" ); document.write( "--------------------
\n" ); document.write( "(3) $\"+100u+%2B+10t+%2B+h+=+4%2A%28+100h+%2B+10t+%2B+u+%29+%2B+21+\"$
\n" ); document.write( "(3) $\"+100u+%2B+10t+%2B+h+=+400h+%2B+40t+%2B+4u+%2B+21+\"$
\n" ); document.write( "(3) $\"+%28400h+-+h%29+%2B+%2840t+-+10t%29+%2B+%284u+-+100u%29+=+-21+\"$
\n" ); document.write( "(3) $\"+399h+%2B+30t+-+96u+=+-21+\"$
\n" ); document.write( "-----------------------------
\n" ); document.write( "(2) $\"+h+=+t%2F2+\"$
\n" ); document.write( "Substitute (1) and (2) into (3)
\n" ); document.write( "(3) $\"+399%2A%28+t%2F2%29+%2B+30t+-+96%2A%28+2t+%2B+1%29+=+-21+\"$
\n" ); document.write( "(3) $\"+399t+%2B+60t+-+192%2A%28+2t+%2B+1+%29+=+-42+\"$
\n" ); document.write( "(3) $\"+399t+%2B+60t+-+384t+-+192+=+-42+\"$
\n" ); document.write( "(3) $\"+75t+=+150+\"$
\n" ); document.write( "(3) $\"+t+=+2+\"$
\n" ); document.write( "---------------
\n" ); document.write( "(2) $\"+h+=+t%2F2+\"$
\n" ); document.write( "(2) $\"+h+=+1+\"$
\n" ); document.write( "--------------
\n" ); document.write( "(1) $\"+u+=+2t+%2B+1+\"$
\n" ); document.write( "(1) $\"+u+=+2%2A2+%2B+1+\"$
\n" ); document.write( "(1) $\"+u+=+5+\"$
\n" ); document.write( "--------------
\n" ); document.write( "The number is 125
\n" ); document.write( "check:
\n" ); document.write( "(3) $\"+100u+%2B+10t+%2B+h+=+4%2A%28+100h+%2B+10t+%2B+u+%29+%2B+21+\"$
\n" ); document.write( "(3) $\"+521+=+4%2A125+%2B+21+\"$
\n" ); document.write( "(3) $\"+521+=+500+%2B+21+\"$
\n" ); document.write( "(3) $\"+521+=+521+\"$
\n" ); document.write( "OK\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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