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#1 Re: Help Me ! » Math Challenge / Mystery » 2011-11-26 18:17:14

Hi Bobbym, it worked! Just being scared of the negative number:

10a + b = 12a + 12b
-2a = 11b
a=11; b=-2
10(11) - 2 = 108
1+0+8 = 9 x 12 = 108

Thank you so much for the enlightenment. You are so wonderful. God bless.
P.S. Hope you won't get fed up with other help I would need.

#2 Re: Help Me ! » Math Challenge / Mystery » 2011-11-26 14:48:40

Why 10a + 1b is used, why not 20a + 4b instead?

#3 Re: Help Me ! » Math Challenge / Mystery » 2011-11-26 14:45:37

What 2 digit number has a value that is 12 (or more or 100+) times the sum of its digits?
What about 3 digit number has a value that is 12 (or more or 100+) times the sum of its digits?

#4 Re: Help Me ! » Math Challenge / Mystery » 2011-11-26 14:04:06

Hi Bobbym, I tried 12 times but the formula no longer work, need your help again.dunno

#5 Re: Help Me ! » Math Challenge / Mystery » 2011-11-26 01:58:17

thank you so much for solving my homework. i still can't understand much algebra 'coz i'm just in grade III but our teacher always give us math challenges and this particular problem I just can't solve in a process. thanks a lot again.

#6 Re: Help Me ! » Math Challenge / Mystery » 2011-11-26 01:42:32

thanks a lot, how did you solve it in a process.

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