46 . If Tk.45000 was invested in the share market when the price per share was Tk.90 and Tk.30000 was invested when the price per share was Tk.100, what was the average price per share purchesd?
  • A. Tk.96.25
  • B. Tk.95.00
  • C. Tk.94.00
  • D. Tk.93.75
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47 . In 1980, there were , on the average 10 deaths at birth (infant mortality) per 10,000 population. By 1990 , there were 8.5 and by 2000, 7.0 Today there were 5.5 deaths at birth per 10,000 population , and it is anticipated that the downward trend will continue.Each of following , if true, would help to account for this trend EXCEPT
  • A. Medical care is more widespread are available.
  • B. Sanitary conditions have improved.
  • C. More effective birth control methods have been implemented.
  • D. The number of pediatricians per 10,000 population has increased.
  • E. Midwifery has declined has declined in favor of medical doctors.
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48 . In a class of 22 students, 21 students get an average of 44 marks. If the remaining students get 66 marks, the average marks of the whole class is--
  • A. 30
  • B. 45
  • C. 15
  • D. None of these
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49 . In a cricket match, five batsmen A, B, C, D and E scored an average 36 runs. D scored 5 more than E; E scored 8 fewer than A; B scored as many as D and E combined; and B and C jointly scored 107. How many runs did E score?
  • A. 62
  • B. 45
  • C. 28
  • D. 20
  • E. None of these
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50 . In a cricket team scores X runs on average over N games and then scores Y runs in the next game, then the average score for the team over the (N + 1) games is---
  • A. (X + Y)/(N + 1)
  • B. (NX + Y)/(N + 1)
  • C. {N(X + Y)}/(N + 1)
  • D. {N(X + Y) - 1}/N
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51 . In an examination of four subjects, a student got 70,80, 90 and x marks and his average was 75. What was the value of x?
  • A. 60
  • B. 90
  • C. 65
  • D. 85
  • E. None of these
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52 . Last year the sales of store X in December was 4 times the average of the monthly sales totals for January through November. The sales total for December was what fraction of the sales total for the year?
  • A. 1/4
  • B. 4/15
  • C. 1/3
  • D. 4/11
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Bangladesh Bank - Assistant Director - 2006
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53 . Rafia ran from her house to school at an average speed of 6 miles per hour and returned along the same route at an average speed of 4 miles per hour . If it took her one hour in total to run to the school and come back, how many minutes did it take her to run from her house to school?
  • A. 16
  • B. 18
  • C. 20
  • D. 22
  • E. 24
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54 . Salim gets grades of 79, 83, 86 and 89 on four math tests. What grade must he get on his fifth test to average 85?
  • A. 86
  • B. 36
  • C. 87
  • D. 85
  • E. 88
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Bangladesh Bank - Officer(Cash) - 2011
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55 . Salma's average in four tests is 80%. What mark does she need score in her fifth test to make her average 84%?
  • A. 100%
  • B. 94%
  • C. 84%
  • D. 96%
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56 . Sum of 10 integer is 462. The average of first 4 number is 52 and the average of last 5 number is 38. What is the fifth number ?
  • A. 64
  • B. 60
  • C. 50
  • D. 62
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Bangladesh Bank - Assistant Director - 2015
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57 . Sum of P and Q is 72 and the value of R is 42. What is the average of P, Q and R?
  • A. 34
  • B. 36
  • C. 38
  • D. 40
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Bangladesh Bank - Assistant Director - 2008
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58 . The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers?
  • A. 2
  • B. 5
  • C. 8
  • D. None of these
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Bangladesh Bank - Assistant Director - 2016
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59 . The average (arithmetic mean ) of x and y is 40 . If z=10 , what is the average of x, y and z?
  • A. 15
  • B. 25
  • C. 20
  • D. None of these
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60 . The average age of 12 children is 15 years. If another child comes the average age comes to 13. What is the age of the new child?
  • A. 11 years
  • B. 7 years
  • C. 9 years
  • D. None
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