Question

Mr Goyal is 27 years older than her daughter Rekha after 8 years he will be twice as old as Rekha find their percentage​

Answer 1

let rekha's present age be x 
therefore, mrs goel's present age is x+27 
after 8 yrs... 
rekha's age=x+8 
mrs goel's age=x+27+8 
according to the problem.... 
2(x+8)=x+27+8 
2x+16=x+35 
2x-x=35-16 
x=19 
rekha's present age=x=19yrs 
therefore mrs goel's present age=x+27=(19+27)yrs=46yrs 

Answer 2

Let the age of Rekha be x years
age of Gopal = x + 27 years

After 8 years

2 (x + 8) = x + 27 + 8
2x + 16 = x + 35
2x - × = 35 - 16
x = 19

the age of Rekha = 19 years

the age of Goyal = x + 27
= 19 + 27
= 46
percentage = 19/ 46 × 100

= 950/23
= 41.30435