Average
1. A
library has an average number of 5 10
visitors on Sunday and 240 visitors on the days. The average number of
visitors per day in amount of 30 days beginning with Sunday is:
(a) 285 (b) 290 (c) 300 (d) 400
2. The
average of 10 number is 5. If each number
is multiplied b 3, the average of the new set of number will be:
(a) 34 (b) 30 (c) 2% (d) 35
3. The
averages of the first five multiple of 7
is :
(a) 7 (b) 14 (c) 21 (d) 28
4. A cricketer
has a certain average in 9 innings. In the tenth innings he scores 60 runs, thereby increase his a
average by 5 urns, What is his new average?
(a) 4 (b) 14 (c) 21 (d) 28
5. The
average of 8 numbers is 6, the average of 6 other numbers is 8. What is the average of all 14 numbers?
(a) 5.5/7 (b) 6.6/7 (c) 72/7 (d) 81/7
6. What is
the average of x, 2x, and 6?
(a) a x (b) 2x (c) x + 2 (d)
7. In
travelling from city A and B, John drove for 1 hour at 50 mph and for 3
hours at 60 Mph. What was his average
speed of his trip?
(a) 53.5 (b) 55 (c) 56 (d) 57.5
8. The
average of 8 number is A, and one of the numbers is 14, If 14 is replaced with
28, then, what is the new average in
terms of A?
(a) A + (b) A + (c) A + 2 (d) 2A + 1
9. Out of
four numbers, the average of first three is 16 and that of the last three is
15. If last number is 18, the first number is:
(a) 20 (b) 21 (c) 23 (d) 25
10. For the final
step in a calculation eeta accidentlay divided by 1000 instead of ultiplying by
1000. What should she do to her answer to correct it.?
(a) Multiply it by 1000 (b) Multiply
it by 100,000
(c) Multiply it by 1000,000 (d) Mutliply it by 200,000
11. If the
average of a, b, c, d and e is 95 and the average of a, b and e is 100. The
everage of c and d is:
(a) 78.5 (b) 87.5 (c) 90 (d) 98
12. The
average of five numbers is 6.9. If one of the number is deleted the average of
the remaining numbers is 4.4. The value of the number deleted?
(a) 6.8 (b) 7.4 (c) 12.5 (d) 16.9
13. The
average of 8 numbers is A, and one of the numbers is 14. If 14 is replaced with
28, then what is the new average ein terms of B is
(a) B + (b) B + (c) B + 2 (d) 2B + 1
14. If the
average of for x numbers k, 2k + 3, 3k –5 and 5k + 1 is 63, then, the value of
k is
(a) 22 (b) 23 (c) 24 (d) 25
15. One
Monday a person 8 packages weighing an average of 15 pounds. What was the average weight, in pound of all the packages the
person maile on both days.
(a) 13 (b) 13 (c) 15 (d)
Answer
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1. (a) |
2. (d) |
3. (c) |
4. (d) |
5. (b) |
6. (c) |
7. (d) |
8. (c) |
9. (b) |
10. (c) |
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11. (b) |
12. (d) |
13.(a) |
14. (b) |
15. (a) |
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