A's 1 day's work = \( \Large \frac{1}{15} \)

B's 1 day's work = \( \Large \frac{1}{20} \)

C's 1 day's work = \( \Large \frac{1}{25} \)

A, B and C worked together.

Therefore, \( \Large \left(A+B+C\right) \)'s 1 day's work

= \( \Large \frac{1}{15} \)+\( \Large \frac{1}{20} \)+\( \Large \frac{1}{25} \)

= \( \Large \frac{20+15+12}{300} = \frac{47}{300} \)

Days taken to complete work by A, B and C working together

= \( \Large \frac{300}{47}\)

Therefore, Share of C = \( \Large \frac{1}{25} \times \frac{300}{47} \times 4700 \) = Rs.1200