Quiz Discussion

Ten years ago, the ages of the members of a joint family of eight people added up to 231 years. Three years later, one member died at the age of 60 years and a child was born during the same year. After another three years, one more member died, again at 60, and a child was born during the same year. The current average of this eight-member joint family is nearest to-

Course Name: Quantitative Aptitude

  • 1] 21 years
  • 2] 22 years
  • 3] 23 years
  • 4] 24 years
  • 5] 25 years
Solution
No Solution Present Yet

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# Quiz
1
Discuss

a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all the numbers is :

  • 1]

    \(3\left( {\frac{{a + n}}{2}} \right)\)

  • 2]

    \(\left( {\frac{{1 + d}}{2}} \right)\)

  • 3]

    \(\left( {\frac{{a + b + m + n}}{4}} \right)\)

  • 4]

    \(3\left( {\frac{{j + c + n +g}}{4}} \right)\)

Solution
2
Discuss

One-fourth of certain journey is covered at the rate of 25 km/h, one-third at the rate of 30 km/h and the rest at 50 km/h. Find the average speed for the whole journey.

  • 1]

    600/53 km/h

  • 2]

    1200/53 km/h

  • 3]

    1800/53 km/h

  • 4]

    1600/53 km/h

  • 5]

    None of these

Solution
3
Discuss

The average salary of all the workers in a workshop is Rs.8000. The average salary of 7 technicians is Rs.12000 and the average salary of the rest is Rs.6000. The total number of workers in the workshop is

  • 1]

    20

  • 2]

    21

  • 3]

    22

  • 4]

    23

Solution
4
Discuss

The speed of the train going from Nagpur to Allahabad is 100 km/h while when coming back from Allahabad to Nagpur, its speed is 150 km/h. find the average speed during whole journey.

 

  • 1] 125 km/hr
  • 2] 75 km/hr
  • 3] 135 km/hr
  • 4] 120 km/hr
Solution
5
Discuss

The average age of group of 20 girls is 15 years and that of another group of 25 boys it is 24 years. The average age of the two groups mixed together is :

  • 1] 19.5 yearas
  • 2] 20 years
  • 3] 21 yearas
  • 4] 21.5 years
Solution
6
Discuss

The average of 11 results is 60. If the average of first six results is 58 and that of last six is 63, find the 6th result-

  • 1] 66
  • 2] 55
  • 3] 64
  • 4] 68
Solution
7
Discuss

A passenger travels from Delhi to Merut at a speed of 30 kmph and return with a speed of 60 kmph. What is the average speed?

  • 1] 40
  • 2] 45
  • 3] 50
  • 4] 48
Solution
8
Discuss

A set A consists of integers 27, 28, 30 and 33. If integer k is included in the set, the average of set A will increase by 30%. What is the value of integer k ?

  • 1] 68
  • 2] 79
  • 3] 73.75
  • 4] 75.25
Solution
9
Discuss

30 pens and 75 pencils altogether were purchased for Rs. 510. If the average price of a pencil was Rs. 2, what was the average price of a pen ?

  • 1] Rs. 9
  • 2] Rs. 10
  • 3] Rs. 11
  • 4] Rs. 12
Solution
10
Discuss

There are two sections A and B of a class, consisting of 36 and 44 students' respectively. If the average weight of section A is 40kg and that of section B is 35kg, find the average weight of the whole class.

  • 1] 30 kg
  • 2] 35 kg
  • 3] 42.5 kg
  • 4] 37.25 kg
Solution
# Quiz