document.write( "Question 451291: I am a 3-digit number less than 300. I am divisible by 2 and 5, but not 3. The sum of my digits is 7. What number am I? \n" ); document.write( "
Algebra.Com's Answer #310351 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Since the number is \"divisible by 2 and 5\", this means that the number is divisible by 10 (since 2*5 = 10). So the number ends with a 0. \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the possible numbers are: \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "100, 110, 120, 130, 140, 150, 160, 170, 180, 190, \n" ); document.write( "200, 210, 220, 230, 240, 250, 260, 270, 280, 290\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now add up the digits of each possible number. The digits that add to 7 will give us the number. It turns out that 160 and 250 fit this description since 1+6+0=7 and 2+5+0=7\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the numbers are 160 and 250. \n" ); document.write( " |