The cost of 10 grams of gold was $75 in 2001. In 2015, the price had increased to $400. What was the percent increase in the cost of the 10 grams of gold?
Choose the most appropriate option:	A) 255%	B) 433.3%	C) 325%	D) 125.5%	E) 300.98%
Increase = 400-75= 
<gadget id="calculator">400-75</gadget>
<output>325</output>
325   % increase= 325*100/75 = 433.3%   Answer: option 433.3%
<result>B</result>
The cost of 10 grams of gold was $75 in 2001. In 2015, the price had increased to $400. What was the percent increase in the cost of the 10 grams of gold?