Algebra - word problems

Question

For every share of Apple stock Ted has; he two shares of
Google stock. Google grow at 12 % per year and Apple stock
grows 7% per year. Ted earned $4,000 from his two stocks? How
much money does he have invested in these stocks?

Answer 1

g = 2a

.12g + .07a = 4000

 

.12(2a) + .07a = 4000

.24a + .07a = 4000

.31a = 4000

a = 12,903.23

 

g = 2(12,903.23) = 25806.46