Question

Please Help Me!!
QUESTION:
A number consists of two digits whose sum is 9.
If 27 is subtracted from the number its digits are reversed.
Find the number.

Please give step by step explanation!!

Answer 1

Answer:

Let the number =ab=10a+b

Sum of digits =9

a+b=9

number −27=number with reversrd digits

10a+b−27=10b+a

9(a−b)=27

a−b=3

(a+b)+(a−b)=9+3⇒a=6,b=3

∴ Required number is 63

Answer 2

Refer the above attachment

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