5 . A man's pension on retirement from service is equal to half the average salary during last 3 years of his service His salary from 1-1-1983 is Rs. 380 per month with increment of Rs. 40 due on 1-10-83, 1-10-84 and 1-10-85. If he retires on 1-1-86, what pension does he draw per month ?
9 . In factory ratio of workers, lobourers and clerks is 8:5:1 and ratio between the wages of one worker, one labourer and one clerk is 5:2:3 If there are 20 labourers working in factory and total wages of the employees is Rs. 318. Find the daily wages of one employee of each category ?
10 . One type of liquid contains 20% water in a mixture of milk and water and the second type of liquid contains 65% of milk in the same type of milk and water solution. A glass is filled with 10 parts of first liquid and 4 parts of second liquid. The water in the new mixture is ?