If 18 is subtracted from a number it reduces to of that number, what is the sum of the digits of that number? 


a) 
9 
b) 
11 
c) 
13 
d) 
15 
If 18 is subtracted from a number it reduces to of that number, what is the sum of the digits of that number? 


a) 
9 
b) 
11 
c) 
13 
d) 
15 
Let the number be According to question, we have
⇒ ∴ Sum of digits=7+2=9