Jim is investing in the stock market. Jim is hoping to earn $2,000 in interest in order to take a trip to Mexico. Stock A earns 4% interest and Stock B earns 7% interest, and Jim has a total of $32,000 to invest. How much should he invest in each in order to earn $2,000 interest?

Respuesta :

Given:

Total amount for investment = $32000

Rate of interest for Stock A = 4%

Rate of interest for Stock B = 7%

Jim is hoping to earn $2,000 in interest.

To find:

The amount of investments in Stock A and Stock B.

Step-by-step explanation:

Let amount of investments in Stock A = $x

Amount of investments in Stock B = $y

Total amount for investment = $32000

[tex]x+y=32000[/tex]        ...(i)

Rate of interests in Stock A and Stock B are 4% and 7%. Total interests is $2000.

[tex]0.04x+0.07y=2000[/tex]           ...(ii)

From (i) and (ii), we get

[tex]0.04x+0.07(32000-x)=2000[/tex]

[tex]0.04x+2240-0.07x=2000[/tex]

[tex]-0.03x=2000-2240[/tex]

[tex]-0.03x=-240[/tex]

Divide both sides by -0.03.

[tex]x=\dfrac{-240}{-0.03}[/tex]

[tex]x=8000[/tex]

Put x=8000 in (i).

[tex]8000+y=32000[/tex]  

[tex]y=32000-8000[/tex]  

[tex]y=24000[/tex]  

Therefore, the amount of investments in Stock A and Stock B are $8000 and $24000 respectively.