(3) The age distribution of workers in a factory is as follows: 7 Age 20-28 28-36 36-44 44-52 52-60 95 18 Workers If 15% of the total strength starting from lowest age group is retrenched and 20% of the total strength from the highest age groups is given premature retirement, then the age limit of workers retained in the factory is: (NDA 2001) (a) 20-36 (c) 28-52 (b) 28-44 (d) 36-52

20% first order reaction is completed in 50 min then the percent left unreacted in 100 min is: (A) 60% (B) 36% (C) 52% (D) 64%

The age distribution of 100 life-insurance policy holders is as follows: Age (on nearest birthday) 17-19.5 20-25.5 26-35.5 36-40.5 41-50.5 51-55.5 56-60.5 61-70.5 No. of persons 5 16 12 26 14 12 6 5 Calculate the mean deviation from median age.

The ages of 10 teachers in a school are as follows : 22,33,45,52,36,27,28,57,39 and 25 years. Find the difference between the ages of the eldest and the youngest teacher.

Study the given pie chart and answr the question that follows The number of workers whose age is 36 years of more but less than 48 years in what percentage more than the number of workers whose age is less than 28 years

Study the giiven graph and answer that follows What is the ratio of the number of workers in the company whose age in 28 years or more but less than 40 years to the number of workers whose age is 40 years or more but less than 52 years.

Four years ago,the average age of A and B was 18 years.At present the average age of A,backslash B and C is 24 years.What would be the age of C after 8 years? (a) 25 years (b) 28 years (c) 32 years (d) 36years

The average age of Sita and Gita is 30 years. If Rita replaces Sita, then the average age will become 28 years and if Rita replaces Gita, then the average age will become 32 years. What are the respective ages (in years) of Sita, Gita and Rita respectively? (a)40,44,36 (b)44, 40, 36 (c)34, 26, 30 (d)30, 26, 34

In a cricket eleven, the average age of eleven players is 28 years. Out of these, the average ages of three groups of three players each are 25 years, 28 years and 30 years respectively. If in these groups the captain and the youngest player are not included and the captain is eleven years older than the youngest player, what is the age of the captain? (a) 33 years (b) 34 years (c) 35 years (d) 36 years

8 persons namely A, B, C, D, E, F, G and H are sitting around a square table facing towards center. 4 of the persons are sitting in 4 corners while 4 of the persons are sitting in the middle of the sides. They have different ages. Those who sit in the corners having the ages multiple of 3. Those who sit at the middle of the sides having the ages multiple of 2. A sits 2nd to the right of the one who has the age of 44. A is an immediate neighbour of the one who is 39 years old. Two persons sit between B and having the age of 39. B has not the age of 44. E sits 2nd to the left of B. D is immediate right of the person having age of 15. Three persons sit between H and the one having age of 15. The difference between the ages of H and the one who is 2nd to the left of H is 6. D is older than H. Immediate neighbours of D are younger than D. Person having age 22 sits 2nd to the right of the person having age 10. Age of A is not 10. G sits immediate left of the person having age of 22. Age of G is 51. Age of C is greater than 20. Age of C is 24 ages more than F. Age of F is 3 years more than age of A. How many persons sit between the one who is of 15 years old and the one who is of 12 years old, when counted anticlockwise from the one who is of 15 years old ?