A invested $150 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?	Select:
A) $ 100	B) $ 75	C) $ 20	D) $ 120	E) $ 60

Rationale: "a : b = 150 * 12 : 200 * 6 a : b = 3 : 2 a ' s share = 100 * 3 / 5 = $ 60 answer is e"
Answer: E