Karol is three times Alice’s age but only twice as old as Betty. Alice is twelve years younger than Karol. How old is Betty? Choose the correct option.
A) 6 B) 9 C) 12 D) 18 E) 24
ans B..9..   given that K=3A=2B..AND A=K-12..   substituting the values A=6,K=18 AND 9=9..
<result>B</result>
Karol is three times Alice’s age but only twice as old as Betty. Alice is twelve years younger than Karol. How old is Betty?