Question

number of two digit is such that the unit digit is X and tens digit is 12 minus x when reversed the number is increased by 54 find the number

Answer 1

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let number be 10x+(12-x)

A.T.Q

10(12-x)+x=54+10x+(12-x)

120- 10x +x = 54 + 10x +12 - x

120- 66 = 18x

54= 18x

x= 3

so number = 30 +(12-3)=39

hope u understand!!!!