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Sunday, May 13, 2012
AVERAGE PART 2
1
The average of 5 numbers is 1 381. The four of the numbers are 1 105, 1 230, 1 515 and 1 620, what the other number?
A
1370
B
1 435
C
2 435
D
5 470
2
The average of six numbers is 51. The average of the first, second, third and fourth numbers is 15. The fifth number is 12 more than the sixth number.
What is the fifth number?
A
117
B
129
C
234
D
246
3
The average of 4 numbers is 45. The average of the first and second numbers is 27. The third number is 8 more than the fourth.
What is the third number?
A
126
B
118
C
67
D
59
4
Table 1 shows the age of 3 persons. Amin's age is not shown.
Table 1
The average age of 4 persons is 9 years 3 months.
How old is Amin?
A
37 years 1 month
B
29 years 5 months
C
29 years 3 months
D
13 years 5 months
5
Diagram 1 shows five pieces of number cards.
Diagram 1
The average of the five numbers is 12.5. Find the value of T if T and U have the same value.
A
12.4
B
16.4
C
24.8
D
37.7
6
Diagram 2 shows four number cards.
Diagram 2
The average of the four numbers is 4 306. Find the value of W.
A
17 224
B
13 718
C
4 506
D
3 506
7
Diagram 3 shows four number cards.
Diagram 3
The average of the four numbers is 62. Find the value of M.
A
248
B
196
C
62
D
52
8
Given that the average of 8 425, 6 820, 5 905 and S is 7 175. Find the value of S.
A
5 550
B
7 550
C
21 150
D
28 700
9
Table 2 shows the age of 3 football players. Azim's age is not shown.
Table 2
The average age of 4 football players is 21 years 8 months.
How old is Azim?
A
86 years 8 months
B
59 years 10 months
C
27 years 10 months
D
26 years 10 months
10
The average of 4 numbers is 4 474. Two of the numbers are 6 253 and 3 483. The third and fourth numbers have the same value. What is the other number?
A
4 080
B
5 080
C
8 160
D
9 736
11
Given that the average of 19.8, 21.22, 18.26, 22.02 and T is 20.18. Find the value of T.
A
100.9
B
81.3
C
19.6
D
9.6
12
Table 3 shows the age of 3 teachers. Cikgu Ramli's age is not shown.
Table 3
The average age of 4 teachers is 35 years 5 months.
How old is Cikgu Ramli?
A
21 years 1 month
B
21 years 3 months
C
40 years 1 month
D
40 years 3 months
13
The average of 4 numbers is 9.625. Three of the numbers are 12, 1.2 and 2.3. Find the fourth number.
A
23
B
20
C
15.5
D
13.5
14
The average of 3 numbers is 99. If the average of 2 numbers is 101, what is the third number?
A
95
B
99
C
101
D
200
15
Table 4 shows the age of three pupils. Fikri's age is not shown.
Table 4
The average age of 4 pupils is 18 years 7 months.
How old is Fikri?
A
23 years 8 months
B
23 years 10 months
C
50 years 6 months
D
74 years 4 months
16
Given that the average of 2 300, 1 850, 2 445, 1 925 and Q is 2 108. Find the value of Q.
A
10 540
B
8 520
C
2 020
D
1 020
17
Diagram 4 shows three pieces of number cards.
Diagram 4
The average of the three numbers is 21.04. Find the value of R and S if R and S have the same value.
A
14.82
B
24.82
C
34.82
D
49.64
18
Table 5 shows the age of 3 hockey players. Husain's age is not shown.
Table 5
The average age of 4 hockey players is 19 years 6 months.
How old is Husain?
A
17 years 1 month
B
18 years 1 month
C
18 years 11 months
D
19 years 1 month
19
Diagram 5 shows five pieces of number cards.
Diagram 5
The average of the five numbers is 50. Find the value of P if P and Q have the same value.
A
52
B
72
C
104
D
146
20
The average of 4 numbers is 1 351.15, three of the four numbers are 4 865, 4.850 and 48.35. Find the other number.
A
486.4
B
586.2
C
4 860.4
D
4 918.2
21
Table 6 shows the number of females in 3 villages.
Table 6
Find the average number of females in one village.
A
942
B
9 042
C
9 204
D
9 402
22
Diagram 6 shows the mass of a box containing 4 toy cars.
Diagram 6
The box has a mass of
kg, when it is empty.
What is the average mass, in g, of a toy car in the box?
A
700
B
750
C
800
D
850
23
Table 7 shows the number of oranges in 3 boxes.
Table 7
Find the average number of oranges in one box.
A
1 195
B
11 059
C
11 509
D
11 905
24
Diagram 7 shows the mass of a box containing 4 cakes.
Diagram 7
The box has a mass of
kg, when it is empty.
What is the average mass, in g, of a cake in the box?
A
725
B
850
C
800
D
975
25
Table 8 shows the number of pupils in two hostels.
Table 8
The number of pupils in hostel O is the same as the number of pupils in hostel M and N. Calculate the average number of pupils in each hostel.
A
47
B
94
C
194
D
282
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