Processing math: 100%
download Mastguru Android App

Question Detail

The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is

  • 40
  • 35
  • 45
  • 55

Answer: Option A

Explanation:

Sum of the present ages of husband, wife and child = (27 * 3 + 3 * 3) years = 90 years.

Sum of the present ages of wife and child = (20 * 2 + 5 * 2) years = 50 years.

Husband's present age = (90 - 50) years = 40 years

Similar Questions :

1. Average of 10 matches is 32, How many runs one should should score to increase his average by 4 runs.

  • 70
  • 76
  • 78
  • 80

Answer: Option B

Explanation:

Average after 11 innings should be 36

So, Required score = (11 * 36) - (10 * 32)
= 396 - 320 = 76

2. When a student weighing 45 kgs left a class, the average weight of the remaining 59 students increased by 200g. What is the average weight of the remaining 59 students

  • 55
  • 56
  • 57
  • 58

Answer: Option C

Explanation:

Let the average weight of the 59 students be A.
So the total weight of the 59 of them will be 59*A.

The questions states that when the weight of this student who left is added, the total weight of the class = 59A + 45
When this student is also included, the average weight decreases by 0.2 kgs

59A+4560=A−0.2



=> 59A + 45 = 60A - 12
=> 45 + 12 = 60A - 59A
=> A = 57

3. Average of all prime numbers between 30 to 50

  • 37
  • 37.8
  • 39
  • 39.8

Answer: Option D

Explanation:

Prime numbers between 30 and 50 are:
31, 37, 41, 43, 47

Average of prime numbers between 30 to 50 will be
(31+37+41+43+475)=1995=39.8

4. The average of six numbers is X and the average of three of these is Y.If the average of the remaining three is z, then

  • x = y + z
  • 2x = y + z
  • x = 2y + z
  • x = y + 2z

Answer: Option B

Explanation:

X =((3y+3z)/6)
or
2X= y + z

5. Marks of a student were wrongly entered in computer as 83, actual marks of that student were 63. Due to this mistake average marks of whole class got increased by half (1/2). Find the total number of students in that class.

  • 25
  • 30
  • 35
  • 40
  • 45

Answer: Option D

Explanation:

Suppose total number of students are = X
Totalincrease=x∗12=x2=>x2=83−63=20=>x=40

Read more from - Average Questions Answers
Post a comment

    Mastguru Youtube Channel

    Videos @mastguru

    Free useful videos - Subscribe Mastguru
     

    Get Free Current Affairs and Govt Jobs Alerts in your mailbox

    To Appreciate Our Effort, Please Like Us

    Quantitative Aptitude
    English Aptitude
    Reasoning Aptitude
    Computer Awareness
    General Knowledge
    Current Affairs
    IT Officer Aptitude
    Programming Aptitude
    Latest Govt Jobs