1.

The digit at ten s place of 2-digit no is 3 times of that in one s place . If the digit are reversed the be no will be 36 less than the original number.find the no

Answer» LET the NUMBER at FIRST digit be X.
:.Tens place=10(3X)=30x
:. Original number=30x+x=31x
ATQ-
Ones digit=3x
:.Tens digit=10x
:. New number=10x+3x=13x
ATQ-
New number-Original number=36
:.31x-13x=36
18x=36
X=36/18
X=2
:. Ones digit of number=2
& Tens digit of number=3×2=6
:. Original number=26
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