A hardware store purchased tools at 1/4 of their list price and sold them for 75% of the list price. What is his percent gain?  Choose one:
A) 75
B) 125
C) 200
D) 225
E) 300
200ost = 1/4= 
<gadget id="calculator">1/4</gadget>
<output>1/4 = around 0.25</output>
.25*L
Sale= .75 List Price = .75*L
Gain Ratio = (Sale - 200ost) / 200ost = (.75*L - .25*L) / .25*L = .5*L / .25*L = 2.0
Gain Percent = 100 * Gain Ratio = 100 * 2.0= 
<gadget id="calculator">100 * 2.0</gadget>
<output>200</output>
200%= Answer 200
<result>C</result>
A hardware store purchased tools at 1/4 of their list price and sold them for 75% of the list price. What is his percent gain?