Math, asked by cool1157, 1 year ago

The sum of two digit number is 12.if the new number formed by reversing the digit is greater than the orginal number by 54find the orginal number

Answers

Answered by ISHANTSAHU
0

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Answered by joni62
3

let unit place be. x

------ ten's place be. y

the number is 10y+x

the reverse number is 10x+y

case. 1

x+y=12. (1)

case. 2

10x+y=(10y+x)+54

10x+y-10y-x=54

9x-9y=54

9(x-y)=54

x-y=6. (2)

from eq. 1 & 2

x+y=12

x-y=6

2x=18. x=9

put the value of x in eq 1

x+y=12

9+y=12. y=3

The number is 10y+x

=10*3+9

=39

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