Chitra can plaster a hall in 12 days and Dinesh in 16 days. With the help of Ezhil, all three finish it in 4 days. The ₹3,600 payment is shared by the work each did. What is Ezhil's share?

Explanation

1. 01

   In 4 days Chitra does $\frac{4}{12} = \frac{1}{3}$; Dinesh does $\frac{4}{16} = \frac{1}{4}$.

2. 02

   Ezhil does the rest: $1 - \frac{1}{3} - \frac{1}{4} = \frac{5}{12}$.

3. 03

   Ezhil's share = $\frac{5}{12} \times 3600 = ₹1{,}500$.