A sum of ₹980 was divided among A, B, and C such that A received $\frac{3}{7}$ of B’s share and C received 75% of A’s share. Find C’s share.

Let B’s share be $7x$.

Then A’s share

$= \frac{3}{7} \times 7x$

$= 3x$

C’s share is 75% of A’s share.
So, C’s share

$= \frac{75}{100} \times 3x$

$= \frac{9x}{4}$

Now,
Total sum

$= 7x + 3x + \frac{9x}{4}$

$= \frac{28x + 12x + 9x}{4}$

$= \frac{49x}{4}$

Given,

$\frac{49x}{4} = 980$

$49x = 3920$
$x = 80$
Therefore, C’s share
$= \frac{9 \times 80}{4}$= 180
C’s share = ₹180