Answer: The interest earned by Diana earn after she pays the tax=$1295
5.18% of Diana's investment is the interest after paying the tax.
Step-by-step explanation:
Given: The total amount invested by Dianna= $25000
Also, she will receive 7% interest at the end of the year.
The amount she received at the end of the year= [tex]7\%\ of\ 25000[/tex]
⇒ The interest amount she received at the end of the year=[tex]0.07\times25000=\$1750[/tex]
Also, she will have to pay a 16% tax on the interest received.
Now, 16% of interest =[tex]0.16\times1750=455[/tex]
So, the interest earned by Diana earn after she pays the tax= $1750-$455=$1295
In percent, the interest after paying the tax= [tex]\frac{1295}{25000}\times100=5.18\%[/tex]