A, B and C enter into partnership. A invests some money at the beginning, B invests double the amount after 6 months, and C invests thrice the amount after 8 months. If the annual gain be Rs.18000. A's share is?  Pick: A) 228 B) 278 C) 600 D) 288 E) 121
x* 12 : 2x* 6: 3x* 4   1:1:1   1/3 * 18000 = 600   Answer: 600
<result>C</result>
A, B and C enter into partnership. A invests some money at the beginning, B invests double the amount after 6 months, and C invests thrice the amount after 8 months. If the annual gain be Rs.18000. A's share is?