document.write( "Question 1188228: How many numbers between 5 and 200 are divisible by 3?\r
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Algebra.Com's Answer #819256 by Edwin McCravy(20056) $\"\"$ $\"About$

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How many numbers between 5 and 200 are divisible by 3
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document.write( "The first one is 6 and the last one is 198 because\r\n" );
document.write( "200/3 = 66.66... and 66x3 = 198, they go \r\n" );
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document.write( "6, 9, 12, ..., 198\r\n" );
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document.write( "Divide them all by 3\r\n" );
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document.write( "2, 3,  4, ..., 66\r\n" );
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document.write( "Subtract 1 from them all\r\n" );
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document.write( "1, 2,  3, ..., 65\r\n" );
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document.write( "So there are 65 of them.

Insert four arithmetic means between -1 and 14

-1, -1+d, -1+2d, -1+3d, -1+4d, -1+5d = 14\r\n" );
document.write( "                                  5d = 15\r\n" );
document.write( "                                   d = 3\r\n" );
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document.write( "-1, -1+(3), -1+2(3), -1+3(3), -1+4(3), -1+5(3) = 14\r\n" );
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document.write( "-1, 2, -1+6, -1+9, -1+12, -1+15 = 14\r\n" );
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document.write( "-1, 2, 5, 8, 11, 14 = 14\r\n" );
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document.write( "So the four arithmetic means are 2, 5, 8, and 11.\r\n" );
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document.write( "Edwin

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