Answers

2014-10-16T19:59:35+05:30
Let the no. be x
4x-12=3x+12 (because its given that ans is 3 time the num. plu 12)
4x-3x=12+12
x=24
the number is 24

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2014-10-16T20:13:19+05:30
Let the number be x, Then
A.T.Q
4x-12=3x+12
-12-12=3x-4x
-x=-24
x=24                  [ - cancelled -]

Hence the number is 24.

Putting the value of x in the equation
4×24-12=3×24+12
96-12=72+12
84=84
 Hence verified.


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