Quiz Discussion

The average age of three boys is 15 years. If their ages are in ratio 3 : 5 : 7, the age of the youngest boy is

 

Course Name: Quantitative Aptitude

  • 1] 21 years
  • 2] 18 years
  • 3] 15 years
  • 4] 9 years
  • 5] 12 years
Solution
No Solution Present Yet

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# Quiz
1
Discuss

A library has an average of 510 visitors on Sundays and 240 on other days. What is the average number of visitors per day in the month of June beginning with a Sunday?

  • 1] 276
  • 2] 280
  • 3] 285
  • 4] 250
Solution
2
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
3
Discuss

The average pocket money of 3 friend A, B, C is Rs. 80 in a particular month. If B spends double and C spends triple of what A spends during that month and if the average of their unspent pocket money is Rs. 60, then A spends (in Rs.)-

  • 1] Rs. 10
  • 2] Rs. 20
  • 3] Rs. 30
  • 4] Rs. 40
Solution
4
Discuss

3 years age, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is same today. The present age of the baby is :

  • 1]

    1 years

  • 2]

    \(1\frac{1}{2} \)years

  • 3]

    2 years

  • 4]

    3 years

Solution
5
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
6
Discuss

The average of four consecutive even numbers is 15. The 2nd highest number is :

  • 1] 12
  • 2] 18
  • 3] 14
  • 4] 16
Solution
7
Discuss

The average annual income (in Rs.) of certain agricultural workers is S and that of other workers is T. The number of agricultural workers is 11 times that of other workers. Then the average monthly income (in Rs.) of all the workers is 

  • 1]

    (S+T)/2

  • 2]

    (S+11T)/2

  • 3]

    (1/11S)+T

  • 4]

    (11S+T)/12

Solution
8
Discuss

A man travels equal distances of his journey at 40, 30 and 15 km/h. respectively. Find his average speed for whole journey.

 

  • 1] 24
  • 2] 25
  • 3] 27
  • 4] 28
Solution
9
Discuss

40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is Rs. 390. The annual income of each executive is Rs. 420. What is the average annual income of all the employees in the factory together?

  • 1] 390
  • 2] 405
  • 3] 408
  • 4] 415
Solution
10
Discuss

Average of two numbers is 8 and average of other three numbers is 3; the average of the five numbers is :

  • 1] 2
  • 2] 3
  • 3] 5
  • 4] 6
Solution
# Quiz