Correct Answer: 42 : 41

Solution : As per the given graph,
The total number of organisations = 3
The total number of females from organisations A, B, and C = 3000 + 3500 + 4000 = 10500
⇒ The average number of females from organisations A, B, and C = $\frac{10500}{3}$
The total number of males from the organisations C, D, and E = 4750 + 2250 + 3250 = 10250
⇒ The average number of males from the organisation C, D, and E = $\frac{10250}{3}$
The required ratio = (The average number of females from organisations A, B, and C): (The average number of males from organisations C, D, and E)
The required ratio = 10500 : 10250 = 42 : 41
Hence, the correct answer is 42 : 41.