A invested $300 in a business after 6 months B invested $200 in the business. End of the year if they got $100 as profit. Find A shares?
Pick.
A) $100  B) $75  C) $20  D) $120  E) $50
A:$75 = 300*12:200*6   A:$75 = 3:1   A's share = 100*3/4= 
<gadget id="calculator">100*3/4</gadget>
<output>75</output>
$75   Answer is $75
<result>B</result>
A invested $300 in a business after 6 months B invested $200 in the business. End of the year if they got $100 as profit. Find A shares?