finding out the investing of the fund and the stock

Question

Mary has $28,000 and she invested some of it in a fund that yielded a 10%profit. The rest she invested in a stock that lost 5%. Her net profit was$1000.00 How much did she invest in each?

Answer 1

Let x= the amount she invested in the first stock

 

Therefore 28000-x=amount invested in the 2nd stock

 

(.10)(x) - .05(28000-x)=1000

.1x-1400+.05x=1000

.15x=2400

x=16000

 

She invested 16000 in the first stock and 12000 in the second.