How much interest will $10,000 earn in 9 months at an annual rate of 6%?  Choose the correct option.
A) $250  B) $350  C) $450  D) $550  E) $650
Soln:-   9 months = 3/4 of year;   6% = 6/100=3/50;   $10,000(principal)*3/50(interest rate)*3/4(time)=$450.   ANSWER:$450
<result>C</result>
How much interest will $10,000 earn in 9 months at an annual rate of 6%?