The incomes of three persons, A, B, and C, are Rs. x, Rs. y, and Rs. z respectively. Each person spends a portion of their income on monthly expenses: 20% for A, 20% for B, and 40% for C. The remaining income of person A is Rs. 4000 less than the remaining income of person B. The remaining income of C is 67.5% of the remaining income of B. Additionally, 10% of the remaining income of C amounts to Rs. 1350. Find the total salary of A, B, and C if their salaries are increased by 30%, 40%, and 20% respectively.