In a three digit number, the hundreds digit is twice the tens digit while the unit digit is thrice the tens digit. Also, the sum of its digits is 18 . Find the number
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Let the hundred digit =2x
Tens digit =x
Unit digit =3x
Sum of digit =2x+x+3x=18
6x=18
x=18/6
X=3
Hundreds digit =2x =2×3=6
Tens digit =x=3
Unit digit =3x=3×3=9
Number =100a+10b+c
100×6+10×3+9
=600+30+9
=639 answer
Tens digit =x
Unit digit =3x
Sum of digit =2x+x+3x=18
6x=18
x=18/6
X=3
Hundreds digit =2x =2×3=6
Tens digit =x=3
Unit digit =3x=3×3=9
Number =100a+10b+c
100×6+10×3+9
=600+30+9
=639 answer
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