Answer:
50 years
Explanation:
Sarah's wealth is 0.9 million or in easy terms $900,000.
If she invests that money at 2%, she could earn an amount of $18,000 every year while she is spending $36,000 each year. Which leads us to the final stage that she is decreasing her wealth by $18,000(36000-18000) every year.
Now this is simply calculated as,
$900000/18000 = 50.
After almost 50 years, she will have here money run out.
I hope this answer is acceptable to you. Good luck mate.
