Answer question 12 soon pls

Dear Student,

Old ratio of P, Q and R = 5:4:3
Q retires. P and Q decided to share profits equally.
Gaining ratio = Old ratio - New ratio
P = 5/12 - 1/2 = 1/12
Q = 1/2 - 3/12 = 3/12
1:3 is the gaining ratio.

Regards