document.write( "Question 750571: By a reduction of 30% a number becomes 210. To make the number equal to 450, the original number is to be increased by \n" ); document.write( "
Algebra.Com's Answer #456704 by dkppathak(439)\"\" \"About 
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30% reduce make 210
\n" ); document.write( "let original number is x\r
\n" ); document.write( "\n" ); document.write( "30 % reduce means 100-30 =70
\n" ); document.write( "70% of x= 210
\n" ); document.write( "70/100 of x= 210
\n" ); document.write( "x=210x100/70 = 300
\n" ); document.write( "new number 450 and original is 300
\n" ); document.write( "increased value =450-300=150
\n" ); document.write( "x/100 of 300 =150
\n" ); document.write( "x=50 %
\n" ); document.write( "answer 50%
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