Final answer:
To find the respective salaries of a, b, and c, we can set up equations using the given information and solve for the unknowns.
Step-by-step explanation:
Let's denote the salaries of a, b, and c as x, y, and z respectively.
Given that their savings are in the ratio of 7:6:9, we can express their savings as 7k, 6k, and 9k. Where k is a common multiple.
We know that the sum of their salaries is rs.333. Therefore, x + y + z = 333.
From the given information, we can set up the following equations: 0.8x = 7k, 0.85y = 6k, and 0.75z = 9k.
By solving these equations, we can find the values of x, y, and z, which will give us their respective salaries.