A watch passes through three hands and each person gains 25%. If the third person sells it for $312.50, what did the first person pay for it?	Choose the correct choice from the following: A) $148 B) $152 C) $156 D) $160 E) $164
1.25*1.25*1.25 * original price = 312.5   (5/4)^3 * original price = 312.5   original price = 64*312.5 / 125= 
<gadget id="calculator">64*312.5 / 125</gadget>
<output>160</output>
$160   The answer is $160.
<result>D</result>
A watch passes through three hands and each person gains 25%. If the third person sells it for $312.50, what did the first person pay for it?