Average SSC CHSL Questions

SSC CHSL-Quantitative Aptitude

Average MCQ Questions


13.
The average daily income of Shyam Lal during the month of February 2020 was ₹560. The average income for the first 16 days was ₹590 and for the last 16 days it was ₹500. What was his average income for 14th, 15th and 16th February?
SSC CHSL 2021-04.08.2021-2
A.
₹545
B.
₹400
C.
₹590
D.
₹587
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ANSWER :
B. ₹400
14.
The average of 19 numbers is 48. The average of the first 7 numbers is 50.6 and that of the last 13 numbers is 47.6. If the 7th number is excluded, then what is the average of the remaining numbers (correct to one decimal place)?
SSC CHSL 2021-04.08.2021-3
A.
42.4
B.
49.5
C.
39.6
D.
47.3
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ANSWER :
D. 47.3
15.
The average height of a certain number of students in a group is 155.6 cm. If 12 students having an average height of 150.5 cm join the group and students having an average height of 159 cm leave the group, the average height of the students in the group will decrease by 34 mm. What is the number of students, initially, in the group?
SSC CHSL 2021-05.08.2021-1
A.
30
B.
25
C.
40
D.
20
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ANSWER :
D. 20
16.
The average of eighteen numbers is 42. The average of the last ten numbers is 40 and that of the first five numbers is 44. The seventh number is 6 less than the sixth and 7 less than the eighth number. The average of the sixth and the eighth number is:
SSC CHSL 2021-05.08.2021-2
A.
46.5
B.
47.5
C.
45
D.
48
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ANSWER :
B. 47.5
17.
The average weight of 3 persons A, B and C is 60 kg. When D joins the group, the average weight becomes 65 kg. When another person E whose weight is 3 kg less than that of D replaces A, the average weight of B, C, D and E becomes 67 kg. What is the weight of A?
SSC CHSL 2021-06.08.2021-1
A.
60 kg
B.
69 kg
C.
72 kg
D.
65 kg
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ANSWER :
B. 69 kg
18.
There are 90 students in a hostel. Due to new admissions, 30 new students join the mess and the daily expenses of the mess increases by ₹560, while the average expenditure per head diminishes by ₹10. What was the original daily expenditure (in ₹) of the mess?
SSC CHSL 2021-06.08.2021-2
A.
4280
B.
5280
C.
3680
D.
4980
😑 View Answer Rough Work Error
ANSWER :
B. 5280