BTGmoderatorLU wrote:Source: Manhattan Prep
If Sarah was 21 years old exactly 5 years ago, how old was Larry exactly 9 years ago?
1) Larry is now twice Sarah's age.
2) Twelve years ago, Jill was 6 years older than Sarah and 20 years younger than Larry.
The OA is D
Say Sarah, now is S years old and Larry, now is L years old. Thus, we have S = 21 + 5 = 26. We have to get the value of L - 9.
Let's take each statement one by one.
1) Larry is now twice Sarah's age.
=> L = 2S = 2*26 = 54 => L - 9 = 52 - 9 = 43. Sufficient.
2) Twelve years ago, Jill was 6 years older than Sarah and 20 years younger than Larry.
J - 12 = (S - 12) + 6 => J = S + 6
Alos, J - 12 = L - 12 - 20 => J = L - 20
=> S + 6 = L - 20
L = S + 26 = 26 + 26 = 52 => L - 9 = 52 - 9 = 43. Sufficient.
The correct answer:
D
Hope this helps!
-Jay
_________________
Manhattan Review GMAT Prep
Locations:
GMAT Classes DC |
GMAT Tutoring Seattle |
GRE Prep Boston |
TOEFL Prep Classes Houston | and many more...
Schedule your free consultation with an experienced GMAT Prep Advisor!
Click here.
