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 is?
A. Rs.7500
B. Rs.7200
C. Rs.6000
D. Rs.5750
Explanation:
x* 12 : 2x* 6: 3x* 4
1:1:1
1/3 * 18000 = 6000