Hi REINE,
This question can be solved with a mix of arithmetic and TESTing THE ANSWERS.
We're told that a bond with a face value of $5,000 yielded 8% in interest. That interest is (5,000)(.08) = $400.
Next, we're told that this interest is approximately 6.5% of the SELLING price of the bond. We're asked for that selling price. Since the answer choices are all possible prices, we can use them 'against' the prompt and find the one - that when you take about 6.5% of it - equals $400.
Let's TEST Answer D: $6,000
(6,000)(.065) = $390
This is too low (remember, it's supposed to be $400), so we're looking for a price that's a bit higher than $6,000. Since there's only one answer that fits that description, it must the answer.
Final Answer: E
GMAT assassins aren't born, they're made,
Rich