Question 1153755
Joey Boy has some money invested at 8% ------x 

and more invested at 12% the second amount is  x+ $25,000  

interest on first amount = 8%x

Interest on second amount = 12%*(x+25000)

interest on second amount -  interest on the first amount=  $5000 

12%*(x+25000) - 8%*x =5000
Multiply the equation by 100

12(x+25000) -8x =500000

12x+ 300000-8x =500000

4x=200000

x= 50000
amount invested at 8% = $50,000

amount invested at 12% = $50,000 +$25000 = $75,000

Check

8% of 50 000 = $ 4000
12% 0f 75,000 = $9000

Difference =$5,000