Lakshya Education MCQs

Question:  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 wor
Options:
A.20 workers
B.21 workers
C.22 workers
D.23 workers
Answer: Option B
Explanation :

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Question 1.  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 wor
  1.    20 workers
  2.    21 workers
  3.    22 workers
  4.    23 workers
Answer: Option B
Explanation :
Question 2.  the respective ratio between the speeds of a car, a train and a bus is 5 : 9 : 4. the average speed of the car, the bus and the train is 72 kmph together. what is the average speed of the car and the
  1.    82 kmph
  2.    83 kmph
  3.    84 kmph
  4.    85 kmph
Answer: Option C
Explanation :
Question 3.  the ratio oftwonumbers is 4 : 7. ifeachofthese numbers increases by 30, their ratio will become 5 : 8 . what is the average of these two numbers ?
  1.    162
  2.    163
  3.    164
  4.    165
Answer: Option D
Explanation :
Question 4.  15 years age a's age was 9/2 of b's if the ratio of their present ages is 12 : 5, what is the average of their present ages ?
  1.    41.5 years
  2.    42.5 years
  3.    43.5 years
  4.    44.5 years
Answer: Option B
Explanation :
Question 5.  the respective ratio between the speeds of a car, a train and a bus is 5 : 9 : 4. the average speed of the car, the bus and the train is 72 kmph together. what is the average speed of the car and the
  1.    82 kmph
  2.    83 kmph
  3.    84 kmph
  4.    85 kmph
Answer: Option C
Explanation :
Question 6.  the average age of all the students of a class is 15 years. the average age of the boys of the class is 17 years and that of the girls is 12 years. if the number of girls in the class is 3 6 then what
  1.    48
  2.    50
  3.    52
  4.    54
Answer: Option D
Explanation :

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