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Model Questions for SSC CHSL (SET-49) ARITHMETIC

1. The average of the first 100 positive integers is

(a) 100
(b) 51
(c) 50.5
(d) 49.5

2. In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only son is 27 years. What is the age of the son?

(a) 12 years
(b) 11 years
(c) 10.5 years
(d) 10 years

3. If 5 men or 7 women can earn Rs. 5,250 per day, how much would 7 men and 13 women earn per day ?

(a) Rs. 11,600
(b) Rs. 11,700
(c) Rs. 16,100
(d) Rs. 17,100

4. If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work ?

(a) 60
(b) 45
(c) 40
(d) 30

5. By walking at 3/4 of his usual speed, a man reaches his office 20 minutes later than his usual time. The usual time taken by him to reach his office is

(a) 75 minutes
(b) 60 minutes
(c) 40 minutes
(d) 30 minutes