1 . After replacing an old member by a new member , it was found that the average age of five members of a club is the same as it was 3 years ago . What is the difference between the ages of the old and the new member ?
  • A. 15 year
  • B. 8 year
  • C. 4 year
  • D. 2 year
  • E. None of them
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2 . Average of 17 even consecutive integers is 42. What is the third integer from the beginning of the series when the integers are arranged in an increasing sequence ?
  • A. 28
  • B. 29
  • C. 30
  • D. 34
  • E. 36
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3 . In a set of three numbers, the average of first two numbers is 2. The average of the last two numbers is 3, and the average of the first and the last numbers is 4. What is the average of three numbers ?
  • A. 3
  • B. 6
  • C. 9
  • D. 24
  • E. None of them
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4 . On a trip of 200 miles, a man travels at the rate of 40 niles per hour for the first 100 miles. For the rest of the trip, he travels at the rate of 55 miles per hour. What is his average speed in miles per hour for the total trip?
  • A. 400/9
  • B. 200/9
  • C. 90
  • D. 50
  • E. None of these
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5 . The average of a series of consecutive odd numbers is 33. If there are 7 numbers in the series, what is the lowest number in the series ?
  • A. 25
  • B. 27
  • C. 29
  • D. 37
  • E. 39
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6 . What is the average sales of all the branches (in thousands) for the year 2011 ?
  • A. 73
  • B. 80
  • C. 83
  • D. 88
  • E. 90
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7 . Which one of the following numbers can be remove from the set S = { 0, 2, 4, 5, 9} without changing the average of the elements of the set S ?
  • A. 2
  • B. 5
  • C. 9
  • D. 4
  • E. None of them
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8 . 50 men took a dip in a water tank 40m long and 20m broad on a religious day. If the average displacement of water by a man is 4 m3 , then the rise in the water level in the tank will be --
  • A. 25 cm
  • B. 30 cm
  • C. 35 cm
  • D. 50 cm
  • E. None of these
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9 . A car passes Dhaka at 9:55 am and Gazipur at 10:15 am. Gazipur is 30 miles from Dhaka. What is the average speed of the car in miles per hour?
  • A. 10
  • B. 30
  • C. 90
  • D. 120
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10 . A college has raised 75% of the amount it needs for a new building by receiving an average donation of $60 from the people already solicited. The people already solicited represent 60% of the people the college will ask for donation. If the college is to raise exactly the amount needed for the new building, how much must the remaining people donate per person?
  • A. $ 25
  • B. $ 30
  • C. $ 40
  • D. $ 50
  • E. $ 60
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11 . A man can cross 10 miles distance of a river in favor of the stream in 2 hours. He can come back against the stream along the same way in 5 hours. What is the average speed, in miles per hour, for the entire trip?
  • A. 20/7
  • B. 10/7
  • C. 7/10
  • D. 7/20
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12 . A man travels 100 miles at 20 miles per, 60 miles at 30 miles per hour and and 80 miles at 10 miles per hour, what is his average rate for the three trips?
  • A. 18 miles per hour
  • B. 17 miles per hour
  • C. 20 miles per hour
  • D. 16 miles per hour
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13 . A man travels a certain distance at a rate of 20 miles an hour and returns at the rate of 30 miles an hour . What is his average speed ?
  • A. 24
  • B. 25.5
  • C. 25
  • D. None of these
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14 . A man travels a distance of 10 miles at 20 miles per hour and returns over the same route at 30 miles per hour. What is his average speed for the round trip in miles per hour?
  • A. 35
  • B. 30
  • C. 25
  • D. 24
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15 . A motorist must complete 180-mile trip is 4 hours. If he averages 50 miles an hour for the first three hours of the trip , how fast must ( in terms of mile per hour ) he travel in the last hour ?
  • A. 30
  • B. 32
  • C. 40
  • D. None of these
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