P and Q started a business with equal capital. P withdrew from the business at the end of 4 months. If, at the end of the year, the business made a profit of 6,400, then the share of P is:

Correct option is A

Given:

Total profit = Rs6400

p invested for = 4 months 

q invested for = 12 months 

Solution:

ratio of their profit = ratio of months they invested because investment is same

P:Q =4:12

=1:3

so profit P =$$\frac{6400\times1}{1+3}$$

           =6400\4

=RS1600