A Book was sold at a loss of 10%. If it was sold for $140 more, there would have been a gain of 4%. What is the cost price?
Choices:
A) $1200
B) $1300
C) $1000
D) $1700
E) $1050
$1000   $1000   90%   104%   --------   14% ---- 140   100% ---- ? =&gt; $1000
<result>C</result>
A Book was sold at a loss of 10%. If it was sold for $140 more, there would have been a gain of 4%. What is the cost price?