A demographic survey of 100 families in which two parents Were present revealed that the average age A, of the oldest child, is 15 years less than V2 the sum of the ages of the two parents. If X represents the age of one parent and Y the age of the other parent, then   which of the following is equivalent to A

1.  ((X+Y)/2)-15

2.  ((X+Y)/2)+15

3.  ((X+Y)/2)-15

4.  X + Y -7.5

View Answer  
4
Correct Answer :

((X+Y)/2)-15


Explanation :
No Explanation available for this question

If 10 years are subtracted from the present age of Randy and the remainder divided by 12, then you would get the present age of his grandson Sandy. If Sandy is 19 years younger to Sunday whose age is X24, then what is the present age of Randy

1.  80 years

2.  70 years

3.  60 years

4.  None of these

View Answer  
4
Correct Answer :

70 years


Explanation :
No Explanation available for this question

Two groups of students, whose average ages are 15 years and 25 years, combine to form' a third group whose average age is 23 years. What is the ratio of the number of students in the first group to the number of students in the second group

1.  8: 2

2.  2: 8

3.  4: 6

4.  None of these

View Answer  
4
Correct Answer :

8: 2


Explanation :
No Explanation available for this question

A year ago, Mohit was four times his son's age. In six years, his age will be 9 more than twice his son's age. What is the present age of the son

1.  10 years

2.  9 years

3.  20 years

4.   None of these

View Answer  
4
Correct Answer :

9 years


Explanation :
No Explanation available for this question

In 1952, I was as old as the number formed by the last two digits of my birth year. When I mentioned this interesting coincidence to my grandfather, he surprised me by saying that the same applied to him also.The difference in our ages is:

1.  40 years

2.  50 years

3.  60 years

4.  None of these

View Answer  
4
Correct Answer :

50 years


Explanation :
No Explanation available for this question

The average age of three boys is 18 years. If their ages are in the ratio 4:5:9, then the age of the youngest boy is

1.  8 years

2.  9 years

3.  12 years

4.  16 years

View Answer  
4
Correct Answer :

12 years


Explanation :
No Explanation available for this question

I am eight times as old as you were when I was as old as you are", said a man to his son. Find out their present ages if the sum of their ages is 75 years.

1.  40 years and 35 years

2.  56 years and 19 years

3.  48 years and 27 years

4.  None of these

View Answer  
4
Correct Answer :

48 years and 27 years


Explanation :
No Explanation available for this question

My brother was 3 years of age when my sister was born, while my mother was 26 years of age when I was born. If my sister was 4 years of age when I was born, then what was the age of my father and mother respectively when my brother was born

1.  35 years, 33 years

2.  35 years, 29 years

3.  32 years, 23 years

4.  None of these

View Answer  
4
Correct Answer :

35 years, 33 years


Explanation :
No Explanation available for this question

Two forest officials in their respective divisions were involved in the harvesting of tendu leaves. One division had an average output of 21 tons from a hectare and the other division, which had 12 hectares of land less, dedicated to tendu leaves, got 25 tons of tendu from a hectare. As a result, the second division harvested 300 tons of tendu leaves more than the first.How many tons of tendu leaves did the first division harvest

1.  3150

2.  3450

3.  3500 

4.  3600

5.  None of these

View Answer  
5
Correct Answer :

3150


Explanation :
No Explanation available for this question

According to a plan, a drilling team had to drill to a depth of 270 metres below the ground level.. For the first three days the team drilled as per the plan. However,subsequently finding that their resources were getting underutilised according to the plan, it started to drill 8 metres, more than the plan every day. Therefore, a day before the planned date they had drilled to a depth of 280 metres .How many metres of drilling was the plan for each day.

1.  38 metres

2.  30 metres

3.  27 metres

4.  28 metres

5.  None of these

View Answer  
5
Correct Answer :

30 metres


Explanation :
No Explanation available for this question
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