Question

The sum of two digits of a number is 9. If 9 is
subtracted from the number, then the digits are
reversed. The number is?
(a) 36
(b) 45
(c) 72
(d) 54
​

Answer 1

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➡️ Let the digits at ones place be x

Then the digits at tens place=9-x.(sum of two digits is 9)

➡️ Therefore the number =10 (9-x)+x=90-10x+x=90-9x

➡️ Now,Number obtained by reversing the digits=10x+9-x=9x+9

➡️ 90-9x-9=9x+9

➡️81-9x=9x+9

➡️ 81-9=9x+9x

➡️ 18x=72

➡️ x=72/18

➡️ x=4

➡️ digits at ones place is x=4

tens place=9-x=9-4=5

➡️ Thus the number is 54

➡️➡️ 54

Step-by-step explanation:

Sorry in recent question I gave wrong Answer , But this Ans is correct ✔✔

Answer 2

Answer:

option D is correct....

hope it helps you ☺☺