P invests Rs.3500 in a business. After 5 months, Q joins him with some investment. At the end of the year If the profit that Q gets is 50% more than that of P, then find the investment of Q.

Correct option is A

Given:
P's investment = Rs. 3500
Q's time = 12-5 = 7 months.
Concept used:
Profit = Time x Investment
Solution:
Let investment of Q be x, and Profit of P be 2y
Profit of Q = 2y × 3/2 = 3y
According to the question
(3500 × 12)/(x × 7) = 2y/3y
=> 500 × 12 × 3/2 = x
=>x=9000