Old ratio of Sameer and Sohan = 4 : 3
$\Rightarrow$ Total parts = 4 + 3 = 7
Sameer’s old share = $\dfrac{4}{7}$
Sohan’s old share = $\dfrac{3}{7}$
New profit sharing ratio among Sameer, Sohan, and Sudarshan = 2 : 3 : 2
$\Rightarrow$ Total parts = 2 + 3 + 2 = 7
Sameer’s new share = $\dfrac{2}{7}$
Sohan’s new share = $\dfrac{3}{7}$
Sudarshan’s new share = $\dfrac{2}{7}$
Now, compute the sacrifice = Old Share – New Share
Sohan’s old share = $\dfrac{3}{7} = \dfrac{9}{21}$
Sohan’s new share = $\dfrac{3}{7} = \dfrac{9}{21}$
$\Rightarrow$ Sohan’s sacrifice = $\dfrac{9}{21} - \dfrac{9}{21} = 0$
But since the question mentions a change to a new ratio 2 : 3 : 2, and if that was actually meant to be a sacrifice by both partners, we must calculate the sacrifice ratio:
Old Ratio = Sameer : Sohan = 4 : 3
New Ratio = Sameer : Sohan : Sudarshan = 2 : 3 : 2
Let’s convert both to 21 parts for easy comparison:
Old Ratio: Sameer = $\dfrac{4}{7} = \dfrac{12}{21}$, Sohan = $\dfrac{3}{7} = \dfrac{9}{21}$
New Ratio: Sameer = $\dfrac{2}{7} = \dfrac{6}{21}$, Sohan = $\dfrac{3}{7} = \dfrac{9}{21}$, Sudarshan = $\dfrac{2}{7} = \dfrac{6}{21}$
Sohan’s share remains unchanged, so no sacrifice.
$\Rightarrow$ Correct answer is (A) Nil, although if Sudarshan received some share from Sohan alone, a clarification in the question would be needed.

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?