A invested $400 in a business after 6 months B invested $200 in the business. End of the year if they got $100 as profit. Find B's shares?	Choose the correct choice from the following choices:
A) $100	B) $75	C) $20	D) $120	E) $50
A:B = 400*12:200*6   A:B = 4:1   B's share = 100*1/5= 
<gadget id="calculator">100*1/5</gadget>
<output>20</output>
$20   Answer is $20
<result>C</result>
A invested $400 in a business after 6 months B invested $200 in the business. End of the year if they got $100 as profit. Find B's shares?