dave13 wrote:

Bunuel wrote:

Two years ago, Cecilia's mother was three times as old as Cecilia. In 12 years, Cecilia's mother will be twice as old as Cecilia. How old is Cecilia currently?

A. 10

B. 12

C. 14

D. 16

E. 18

Hello

generis, can you advice if my approach is correct

C = Cecilia

M = Mother

m=3c-2 <---- Two years ago, Cecilia's mother was three times as old as Cecilia

m=12+2c < ---- In 12 years, Cecilia's mother will be twice as old as Cecilia

How old is Cecilia currently? <--- C ?

3c-2 = 12+2c

3c-2c = 12+2

c= 14

Since two years ago, Cecilia's mother was three times as old as Cecilia - 2, so we add those two years to 14 and get 16

no ?

I think I missed something though I answered correctly

dave13 , you're not missing anything. You did one step in your head (adding 2 at the end). I think that's what you're sensing.

You and

kablayi (welcome!) used similar approaches with variables defined a bit differently.

You just didn't "remind" yourself explicitly -- as

kablayi did by writing Cecilia's age "now" as "x + 2" -- that whatever you calculated for Cecilia's age would require you to add 2.

In short, good instincts!

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