SOLUTION: Brett is twice as old as his sister. four years ago he was four Times as his sister. how old is Brett's sister now

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Question 919165: Brett is twice as old as his sister. four years ago he was four Times as his sister. how old is Brett's sister now
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
x sister's age. Brett 2x
2x - 4 = 4(x-4)
12 = 2x
6 = x, sister's age. Brett is 12 2%2A6
And...checking...4 years ago
8 = 4•2