document.write( "Question 880370: Four numbers add up to 90. The second number is twice the first number, the third number is twice the second number, and the fourth number is 10 more than the first number. What are the four numbers \n" ); document.write( "
Algebra.Com's Answer #531383 by lwsshak3(11628)\"\" \"About 
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Four numbers add up to 90. The second number is twice the first number, the third number is twice the second number, and the fourth number is 10 more than the first number. What are the four numbers
\n" ); document.write( "***
\n" ); document.write( "let x=1st number
\n" ); document.write( "2x=2nd number
\n" ); document.write( "4x=3rd number
\n" ); document.write( "x+10=4th number
\n" ); document.write( "..
\n" ); document.write( "x+2x+4x+x+10=90
\n" ); document.write( "8x=80
\n" ); document.write( "x=10
\n" ); document.write( "2x=20
\n" ); document.write( "4x=40
\n" ); document.write( "x+10=20
\n" ); document.write( "..
\n" ); document.write( "1st number=10
\n" ); document.write( "2nd number=20
\n" ); document.write( "3rd number=40
\n" ); document.write( "4th number=20 \n" ); document.write( "
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