Bunuel wrote:
In 10 years Linda will be as old as Bobby is now. Thirty years ago Bobby was twice Linda's age. How old is Linda now?
A. 20
B. 30
C. 40
D. 50
E. 60
<== 30 years------Now----10 years==>
I will eliminate answer A & B ...if she is 20 or 30 years now, then she wasn't born yet 30 years ago.
by trying answer choice (c)
L+10=B (1) ==> 40+10 =50
B=50 from (1) (now)
B-30=2(L-30) ==> 50-30 = 2(40-30)
which means...30 years ago B was 20 and L was 10
Answer is C (40)
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