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

In a boat there are 8 men whose average weight is increased by 1 kg when 1 man of 60 kg is replaced by a new man. What is weight of new comer?

 

  • 1] 70 kg
  • 2] 66 kg
  • 3] 68 kg
  • 4] 69 kg
Solution
2
Discuss

The average age of an adult class is 40 years. 12 new students with an average age of 32 years join the class, thereby decreasing the average by 4 years. The original strength of the class was-

  • 1] 10
  • 2] 11
  • 3] 12
  • 4] 15
Solution
3
Discuss

The average of 20 students is 12 years, if the teacher's age is included, average increases by one. The age of the teacher is:

  • 1] 30 years
  • 2] 33 years
  • 3] 28 years
  • 4] 35 years
Solution
4
Discuss

Four years ago, the average age of a family of four persons was 18 years. During this period, a baby was born. Today if the average age of the family is still 18 years, the age of the baby is

  • 1] 1.2 years
  • 2] 2 years
  • 3] 2.5 years
  • 4] 3 years
Solution
5
Discuss

When the average age of a couple and their son was 42 years, the son married and got a child after one year. When the child was 5 years old, the average age of the family became 36 years. What was the age of daughter-in- law at the time of their marriage ?

  • 1] 23 years
  • 2] 24 years
  • 3] 25 years
  • 4] 26 years
Solution
6
Discuss

The average of five different positive numbers is 25. x is the decrease in the average when the smallest number among them is replaced by 0. What can be said about x?

  • 1] x is less than 5
  • 2] x is greater than 5
  • 3] x is equal to 5
  • 4] Cannot be determined
Solution
7
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
8
Discuss

If 25a + 25b = 115, what is the average of a and b?

  • 1] 2.5
  • 2] 3.4
  • 3] 4.5
  • 4] 4.6
  • 5] None of these
Solution
9
Discuss

Four years ago, the average age of A and B was 18 years. At present the average age of A, B, and C is 24 years. What would be the age of C after 8 years?

  • 1] 25 years
  • 2] 28 years
  • 3] 32 years
  • 4] 36 years
Solution
10
Discuss

A cricketer scored some runs in his 21st innings, as a result, his average runs increased by 3. If the present average run is 40, how many runs he scored in the final innings?

  • 1] 103
  • 2] 100
  • 3] 85
  • 4] 82
Solution
# Quiz