The ten digit of a number is twice its unit the number obtained by the interchanging the digit is 36 less than the original number find the original number
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2X ×10 + X = 20X+X
New
X×10 +2X=10X+2
ATQ
(20X+X) - (10X+2X) =36
Or, 9X=36
X=4
So Original number is
( 2×4×10 + 4=) 84
New
X×10 +2X=10X+2
ATQ
(20X+X) - (10X+2X) =36
Or, 9X=36
X=4
So Original number is
( 2×4×10 + 4=) 84
Furqanarzo:
What is x
X is unit digit of the number.
Can you consider the digits as x and y? It is difficult to understand!!
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