Question

The sum of digit of a two digit number is 15 find the number formed by reversing the digit is less than the original number 27.Solve in one variable
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Answer 1

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Answer 2

Answer:

96

Step-by-step explanation:

let tens digit of the original number be x

so original number,

10 (x) + (15-x)

reversing digit mean

10(15-x)+x

[10(x) + (15-x)]-[10(15-x)+x]= 27

or 10x+15x-150+10x-x= 27

or 10x+10x+15-150-x-x= 27

or 20x-135-2x= 27

or 18x-135= 27

or 18x= 27+135

or 18x= 162

or x= 162/18

or x= 9

original number= 10(x) + (15-x)

= 10(9) + (15-9)

= 90+6

= 96

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