A, B and C are partners. They have invested Rs.35000, Rs. 25000 and 10,000 respectively for the same period. If the total profit is Rs. 18000, find the share of A.

9000

Since all three partners invested for the same period, the profit is divided in the ratio of their investments.

Investment ratio:

$35000 : 25000 : 10000 = 7 : 5 : 2$

Total ratio:

$7 + 5 + 2 = 14$

A's share of the profit:

$\frac{7}{14} \times 18000 = \frac{1}{2} \times 18000 = 9000$