By equating the linear equations method, we can find the present age of Heather is 12 years.
It is given in the question that Angie is six years older than Heather and 6 years ago, Angie was twice as old as Heather.
We have to find the present age of Heather.
Let the present age of Heather be x years.
Hence, according to the question, we can write:-
Present age of Angie = (x + 6) years.
Also,
(x + 6 - 6) = 2(x - 6)
x = 2x - 12
2x - x = 12
x = 12 years
Hence, the present age of Heather is 12 years.
To learn more about equating the linear equations, here:-
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