A number consists of two digits whose sum is 9 The number obtained by reversing the order of the dig...........

Quantitative Aptitude ( CCS) Number System

A number consists of two digits whose sum is 9. The number obtained by reversing the order of the digits of the given number, exceeds the given number by 27. the number is:

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Explanation:

Let the tens digit of the number be x and its units digit be y.
By the question
x+y = 9 (i)
and
y-x = 3 (ii)
On solving (i) and (ii) we get y=6 and x =3
10x+y = 10*3+6 = 36