Dear Readers,
As SSC CGL| CHSL| STENO | CPO notification is out and candidates have started their preparation for this exam. Mahendras also has started special quizzes for this examination. This series of quizzes are based on the latest pattern of the SSC CGL| CHSL| STENO | CPO examination. Regular practice of the questions included in the quizzes will boost up your preparations and it will be very helpful in scoring good marks in the examination.
1-The average price of 80 mobile phones is Rs.30,000. If the highest and lowest price mobile phones are sold out then the average price of remaining 78 mobile phones is Rs.29,500. The cost of the highest mobile is Rs.80,000. The cost of lowest price mobile is?
(A) Rs.18000
(B) Rs.15000
(C) Rs.19000
(D) can’t be determined
Solution: (C)
Q.2. In a Company the average income of all the employees is Rs.20000 per month. Recently the company announced increment of Rs.2000 per month for all the employees. The new average income of all the employees is?
(A)22000
(B)24000
(C)28000
(D)26000
Solution: (A)
Q.3. Ramesh walked 6 km to reach the station from his house, then he boarded a train whose average speed was 60 kmph and thus he reached his destination. In this way he
took a total time of 3 hours. If the average speed of the entire journey was 32 kmph then the average speed of walking is:
(A)5 kmph
(B)8 kmph
(C)2 kmph
(D)4 kmph
Solution: (D)
Q.4. Bala travels first one-third of the total distance at the speed of 10 kmph and the next one-third distance at the speed of 20 kmph and the last one – third distance at the
speed of 60 kmph. What is the average speed of Bala?
(A) 18 kmph
(B)19 kmph
(C) 16 kmph
(D)12 kmph
Solution: (A)
Q.5. The average income of Arun, Bala and Chitra is Rs.12,000 per month and average income of Bala, Chitra and David is Rs.15,000 per month. If the average salary of David be twice that of Arun, then theaverage salary of Bala and Chitra is in Rs.?
(A) 15,000
(B)20,000
(C) 14500
(D)13500
Solution: (D)
Q.6. The average monthly expenditure of Mr. Ravi's family for the first three months is Rs 2,750, for the next three months is Rs 2,940 and for the last three months Rs 3,150.
If his family saves Rs 4980 for nine months, find the average monthly income of the family for the 9 months?
(A) Rs. 3800
(B) Rs. 3500
(C) Rs. 3400
(D) Rs. 4200
Solution: (B)
Q.7. The average age of a family of 8 members is 24 years. If the age of the youngest member be 6 years, the average age of the family at the birth of the youngest member
was?
(A)23.42 years
(B)21.42 years
(C)27.42 years
(D)26.42 years
Solution: (B)
Q.8. Mr. Ravi's family has 10 males and a few females, the average monthly consumption of rice per head is 8 kg. If the average monthly consumption of rice per head be 10 kg in the case of males and 6 kg in the case of females, find the number of females in Ravi's family?
(A)2
(B)4
(C)6
(D)10
Solution: (D)
Q.9. The mean of100items was46. Lateron it was discovered that an item 16 was misread as 61 and another item 43 was misread as 34. It was also found that the number of items was90and not100. Then what is the correctmean?
(A)50
(B)50.7
(C)52
(D)52.7
Solution: (B)
Q.10. The average of seven numbers is 18. If one of the number is 17 and if it is replaced by 31, then the average becomes:
(A)21.5
(B)19.5
(C)20
(D)21
Solution: (C)
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MAHENDRA GURU