Question

The sum of two digit number is 14. If 18 is added to the number, the digits get reversed. The reversed number is

68

86

39

93

​

Answer 1

10x+y+18= 10y+x

9x-9y=-18

y-x=2 ………….. Equation 1

Again,

x+y=14 ………… Equation 2

Adding the two equations :

X is cancelled out and y=8

Substituting value of y in any of the two equations we get x=6

So the number is 68

If you reverse the digits it becomes 86 , which is 18 greater than the number



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