The marks obtained by a student in five subjects are 68,73,62,85 and 79. Find the average score.
A.
a) 7 3
B.
b) 73. 4
C.
c) 7 5
D.
d) 74. 5
2.
The average income of a group of 9 work- ers is Rs. 137.30 and that of another group of 7 workers is Rs. 95.06. The average income of all the persons is:
A.
a) Rs. 118.82
B.
b) Rs. 116.18
C.
c) Rs. 125.18
D.
d) Rs. 128.15
3.
There are 40 boys in a class. One boy weighing 40 kg goes away, and at the same time another boy joins the class. If the aver- age weight of the class is thus increased by 100 gm, the weight of the new boy is.
A.
a) 39.9 kg
B.
b) 44.1 kg
C.
c) 40.1 kg
D.
d) 44 kg
4.
My average expenses for 4 days is Rs. 6.00. I spend Rs. 7.70 on first day and Rs.6.30 on second day. If I spent Rs. 10 on third day, what did I spend on the 4th day?
A.
a) Rs. 2/-
B.
b) Rs. 3/-
C.
c) Rs. 4/-
D.
d) Nothing
5.
The average temperature on Tuesday, Wednesday and Thursday was 37° centigrade. The average tempeature on Wednesday, Thursday and Friday was 38° centigrade. If the temperature on Friday was 39° centigrade, the temperature on Tuesday was:
A.
a) 35° C
B.
b) 36° C
C.
c) 37° C
D.
d) 38° C
6.
The average age of students in two classes of 40 students each is 10 years and 8 years respectively. The average age of stu- dents in both the classes taken together is: a)
A.
a) 8 years
B.
b) 9 years
C.
c) 10 years
D.
d) 11 years
7.
The average age of 50 soldiers in troop is 25 years. If the captain's age is included, the average age of all of them still remains the same. What is the captain's age in years?
A.
a) 2 5
B.
b) More than 25
C.
c) Less than 25
D.
d) Cannot be determined
8.
Two towns A and B are some distance apart. A girl cycles from A to B at a speed of 10 km/hr and then back from B to A at the rate of 15 km/ hr. The average speed during the journey is:
A.
a) 12.5 km/hr
B.
b) 15 km/hr
C.
c) 12 km/hr
D.
d) 13.5 km/hr
9.
An employee's average contribution to his provident fund for the first 9 months was Rs. 3,500 each and for each of the remaining 3 months, the contribution was Rs. 5,500. By what amount was his total contribution short of Rs. 58,000?
A.
a) Rs. 4,000
B.
b) Rs. 16,500
C.
c) Rs. 8,000
D.
d) Rs. 10,000
10.
What fraction must be subtracted from the sum of 1/4 and 1/6 to have an average of 1/12 of these the two fractiaons?
A.
1/3
B.
1/2
C.
1/4
D.
1/8
11.
The average marks of 12 students was calculated as 40. But it was later found that marks of one student had been entered wrongly as 42 instead of 54 and of another as 74 instead of 50. The correct average is:
A.
a) 3 9
B.
b) 4 0
C.
c) 4 1
D.
d) 4 3
12.
The average salary of workers in an in- dustry is Rs. 2000, the average salary of 150 technicians being Rs. 4000, and the non-tech- nicians being Rs. 1,250. The total number of workers is
A.
a) 4 5 0
B.
b) 3 0 0
C.
c) 5 5 0
D.
d) 500
13.
The average age of a husband and a wife who were married four years ago was 20 years then. What will be the average age of the fam- ily now if they have a three years old child?
A.
15 2/3years
B.
16 1/3years
C.
c) 17 years
D.
d) 16 years
14.
The average of three consecutive odd numbers is 39. What is the sum of the first two of these numbers?
A.
a) 7 8
B.
b) 7 6
C.
c) 2 4
D.
d) 1 1
15.
If the average of 9 consecutive numbers is 20, the highest of these numbers is:
A.
a) 2 0
B.
b) 2 1
C.
c) 2 4
D.
d) 2 6
16.
The sum of two consecutive even num- bers is 23 more than the average of these two numbers. What is the second number?
A.
a) 2 2
B.
b) 2 4
C.
c) 2 6
D.
d) Data indequate
17.
The average of 17 numbers is 10.9 If the average of first nine is 10.5 and that of the last nine is 11.4, the middle number is
A.
a) 11. 8
B.
b) 11. 4
C.
c) 10. 9
D.
d) 11. 7
18.
The average monthly expenditure of a family was Rs. 2,200 during first 3 months, Rs. 2,550 during next 4 months and Rs. 3,120 during last 5 months of the year. If the total saving during the year was Rs. 1,260, find average monthly income.
A.
a) Rs. 3,960
B.
b) Rs. 760.8
C.
c) Rs. 2,805
D.
d) Rs. 3,125
19.
30 pens and 75 pencils were purchased for Rs. 510. if the average price of a pencil was Rs. 2.00, find the average price of a pen.
A.
a) Rs. 12
B.
b) Rs. 15
C.
. 15 c) Rs. 19
D.
d) Rs. 25
20.
the average age of the husband and wife who were married 7 years ago was 25 years then. The average age of the family including the husband, wife and the child born during the interval is 22 years, now. How old is the child now?
A.
a) 2 years
B.
b) 3.5 years
C.
c) 1 years
D.
d) 4 years
21.
Average monthly income of a family of four earning members was Rs. 735. One of the earning members died and therefore the average income came down to Rs. 650. The income of the deceased was:
A.
a) Rs. 820
B.
b) Rs. 990
C.
c) Rs. 692.50
D.
d) Rs. 1,385
22.
A batsman has certain average runs for 20 innings. In the 21st inning, he served 107 runs thereby increasing his average by is his average after 21 innings?
