Solution

To find the profit earned, we require time period and investment of each person. THUS, all the statements are necessary

From I,II & III : Neeta invested Rs. 85,000 for 24 months while Seeta and Geeta invested for 18 months.

Amount invested by Seeta = $\frac{3}{8} \times 2.3 = $ lakhs

= $Rs. 86,250$

=> Amount invested by Geeta = $2,30,000 - 86,250 = Rs. 1,43,750$

=> RATIO of SHARE in profit of Neeta , Seeta and Geeta

= $(85,000 \times 24) : (86,250 \times 18) : (1,43,750 \times 18)$

$\therefore$ We can calculate Neeta's share in profit.

Thus, all the statements are necessary.