Correct Answer - B
Let the investment of Q be Rs. X
`therefore` investment of P = Rs. 3x
Ratio of profit
`{:(,"P",:"Q":,"R"),(,12xx"3x",12 xx "x" ,9 xx "y"):}`
ATQ,
36x = 9y
y = 4x
`therefore` Required precntage `= (12 xx x)/(9 xx 4x) xx 100`
`= 33(1)/(3)%`