Quiz Discussion

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?

Course Name: Quantitative Aptitude

  • 1] 40
  • 2] 45
  • 3] 50
  • 4] 48
Solution
No Solution Present Yet

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# Quiz
1
Discuss

The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is :

  • 1] 35
  • 2] 45
  • 3] 55
  • 4] 65
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

A shop of electronic goods is closed on Monday. The average daily sales for remaining six days of a week is Rs. 15,640 and the average sale of Tuesday to Saturday is Rs. 14,124. The sales on Sunday is -

  • 1] Rs. 20,188
  • 2] Data inadequate
  • 3] Rs. 23,220
  • 4] Rs. 21,704
Solution
4
Discuss

The average of 6 observations is 45.5. If one new observation is added to the previous observations, then the new average becomes 47. The new observation is :

  • 1] 58
  • 2] 56
  • 3] 50
  • 4] 46
Solution
5
Discuss

The average age of a class is 15.8 years. The average age of the boys in the class is 16.4 years while that of the girls is 15.4 years. What is the ratio of boys to girls in the class?

  • 1]

    1:2

  • 2]

    2:3

  • 3]

    3:4

  • 4]

    3:5

Solution
6
Discuss

The mean weight of 100 students in a class is 46 kg. The mean weight of boys is 50 and of girls is 40 kg. Therefore, the number of boys is:

  • 1] 50
  • 2] 60
  • 3] 70
  • 4] 65
Solution
7
Discuss

The average (arithmetic mean) of 330, 360 and 390 is :

  • 1]

    \({3^{27}} + {3^{57}} + {3^{87}}\)

  • 2]

    \({3^{29}} + {3^{59}} + {3^{89}}\)

  • 3]

    \({3^{60}}\)

  • 4]

    \({3^{177}}\)

Solution
8
Discuss

Find the average of 205, 302, 108, 403, and 202-

  • 1] 450
  • 2] 1125
  • 3] 244
  • 4] 1220
Solution
9
Discuss

Find the average of all prime numbers between 30 and 50.

  • 1]

    37.8

  • 2]

    38.9

  • 3]

    39.8

  • 4]

    42.8

Solution
10
Discuss

The average weight of 21 boys was recorded as 64 kg. If the weight of the teacher was added, the average increased by 1 kg. What was the teacher’s weight?

  • 1] 86 kg
  • 2] 64 kg
  • 3] 72 kg
  • 4] 84 kg
Solution
# Quiz