Question

12. 'X' is twice as old as 'Y' 3 years ago, when X' was as old as 'Y' today. If the difference between their ages as
present is 3 years, how old is X' at present?
A. 18 years
B. 12 years
C. 9 years
D. 8 years​

Answer 1

Answer:

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so here we go

Step-by-step explanation:

now according to first case

x=2(y-3)

so x=2y-6 (1)

now according to first condition

x-y=3 (2)

substitute value of x in (2)

we get 2y-y-6=3

so y=9

substitute value of y in any of two equations

we get x=12

hence option b is ryt ie x is 12 years old presently