A,B,C together can earn $600 per day. while A and C together earn $400 and B and C together can earn $300. The daily earnings of C?  Select:  A) $100  B) $200  C) $250  D) $300  E) $500
B's daily earnings = 600-400= 
<gadget id="calculator">600-400</gadget>
<output>200</output>
$200   $100's daily earnings= 600-300= 
<gadget id="calculator">600-300</gadget>
<output>300</output>
$300   C's daily earnings= 600-200-300= 
<gadget id="calculator">600-200-300</gadget>
<output>100</output>
$100   $100nswer is $100
<result>A</result>
A,B,C together can earn $600 per day. while A and C together earn $400 and B and C together can earn $300. The daily earnings of C?