SOLUTION: alice is twice as old as brian. cristal is three years younger then brian .the sum of their ages is 45. how old is cristal?

SOLUTION: alice is twice as old as brian. cristal is three years younger then brian .the sum of their ages is 45. how old is cristal?

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Question 213106: alice is twice as old as brian. cristal is three years younger then brian .the sum of their ages is 45. how old is cristal?
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
Let a=alice's age, b=brian's and c=crystal's
a=2b
c=b-3
.
b+2b+b-3=45
4b-3=45
4b=48
b=12
a=24
c=9
.
Ed
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