Question

The sum of the digits of a two-digit number is 9. If 27 is added to it, the digits of the number get reversed. The number is (a) 27 (b) 72 (c) 45 (d) 36 Answer Answer: d

Answer 1

Let the digits be 'x' and 'y'

x+y=9 (eq 1)

ATQ-:

10x + y +27 = 10y + x

9x + 27 = 9y

from eq 1 -:

x=9-y

9(9-y) + 27 = 9y

81 - 9y +27 = 9y

18y = 108

thus y = 6

by eq1 x=3

Thus the no is -- 10x + y = 30 + 6 = 36

So (d) 36 is the correct answer

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Answer 2

Answer:

36

Step-by-step explanation: