Aretired woman has $40,000 to invest. she has chosen one relatively safe investment fund that has an annual yield of 9% and another riskier fund that has a 13% annual yield. how much should she invest in each fund if she would like to earn $4,000 per year from her investments?

She should invest $30000 in the 9% fund and $10000 in the 13% fund.

Explanation

Suppose, the amount of investment at 9% rate is   dollar.

As the total amount of investment is $40000 , so the investment at 13% rate will be:

So, the amount of earnings per year from 9% fund dollar

and the amount of earnings per year from 13% fund dollar.

Given that, the total earnings per year is $4000. So the equation will be......

So, the amount of investment at 9% fund is $30000 and the amount of investment at 13% fund = ($40000- $30000)= $10000

y=x+2 hope this jdjxhdnzbdjdo

-6 is the correct option from the above given options