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. (in one variable)

Answer 1

Answer:

hope you understand it.

Step-by-step explanation:

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