Question

rajat is 10 years older than shree. 10 years from now rajat would be twice as old as shree was 10 years before. how old old would be shree after 12 years?

Answer 1

let rajay present age be x years
and shree age be y years
Then ;
x = y+10 ---------------------(i)

x+10=2(y-10)
x+10 = 2y- 20
x = 2y - 30 -----------------(ii)

Now compare the the equation (i) & (ii)
x=x
y+10= 2y-30
y = 40 yrs

Present age of shree = y = 40yrs
shree age after 12 yrs
= 40+12
= 52yrs


hope it helped,
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Answer 2

let shrees age =x and rajats age=x+10.
after 10 years...
shrees age=x+10 and rajats age = x+10+10 =x+20

given that rajat would be twice as old as agree was before 10 years.

so equation would be......
(x+10-10)*2 = x+20
2x=x+20
x=20

after 12 years shrees age would be 20+12=32 tears.