16 . A motorist travels to a place 150 km away at an average speed of 50 km and returns at 30 km per hour. What is his average speed for the whole journey in km per hour?
  • A. 35
  • B. 37
  • C. 37.5
  • D. 40
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17 . A school has raised 75% of the amount it needs for a new building by receiving an average donation of Tk 60 from the people already solicited. The people already solicited represent 60% of the people the college will ask for donations If the college is to raise exactly the amount needed for the new building , how much must the remaining people donate per person?
  • A. Tk 25
  • B. Tk 30
  • C. Tk 40
  • D. Tk 50
  • E. Tk 60
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18 . A student scored 80 marks in his first test. After taking the third test, his average dropped from 82 to78 . What is the average of his 2nd and 3rd tests ?
  • A. 57
  • B. 76
  • C. 77
  • D. 78
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Bangladesh Bank - Assistant Director - 2001
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19 . A survey of City A found an average of 3.2 people per household and an average of 1.2 DVD players per household . If 48,000 people live in City A, how many DVD players are there in City A?
  • A. 15,000
  • B. 16,000
  • C. 18,000
  • D. 40,000
  • E. None of these
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20 . A train passes city X at 9.55 am and city Y at 10.15 am. The distance between city X and Y is 45 miles. What is the average speed in miles per hour of the train?
  • A. 135
  • B. 120
  • C. 270
  • D. None of these
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21 . A train went 300 miles from city X to city Y at an average speed of 80 mph. At what speed did it travel on the way back if its average speed for the whole trip was 100 mph?
  • A. 120 mph
  • B. 125 mph
  • C. 133.33 mph
  • D. 137.5 mph
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Bangladesh Bank - Assistant Director - 2006
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22 . A truck driver must complete a 180-mile trip in 4 hours. If he averages 50 miles an hour for the first three hours of his trip, how fast must he travel in the final hour?
  • A. 30 mph
  • B. 45 mph
  • C. 35 mph
  • D. 40 mph
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23 . After 3 semesters in college , jim has a 3.0 GPA. What GPA must jim attain in his fourth semesters if he wishes to raise his GPA to a 3.1 ?
  • A. 2.7
  • B. 3.1
  • C. 3.3
  • D. 3.4
  • E. 3.5
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Bangladesh Bank - Assistant Director - 2009
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24 . Ali bought 500 shares of company X at Tk. 600 and 2 months later bought another 250 shares of the same company at Tk. 560. At which price should he purchase additional 250 shares in order to have an average price of Tk. 580 per share?
  • A. 600
  • B. 580
  • C. 560
  • D. 570
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25 . Amer is working in an insurance company as traveling salesman. He drove 373.5 miles on Monday, 481.6 miles on Tuesday, 392.8 miles on Wednesday, 502 miles on Thursday and 53.7 miles on Friday . What is his average traveling?
  • A. 351.8 miles
  • B. 360.72 miles
  • C. 413.6 miles
  • D. 286.9 miles
  • E. None of these
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26 . An express train travelled at an average speed of 100 km/hr, slopping for 3 minutes after every 75 km. How long did it take to reach its destination 600 km from the starting point?
  • A. 6 hrs 21 min
  • B. 6 hrs 24 min
  • C. 6 hrs 27 min
  • D. 6 hrs 30 min
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27 . At 9:00 a. m. the train Surmal left station and two hours later the train. Titas left the same station on a parallel track in the same direction. If Surma averaged 60 kilometers per hour and Titas averaged 75 kilometers per hour, at what time did Titas pass Surma?
  • A. 2:00 p.m.
  • B. 5:00 p.m.
  • C. 6:00 p.m
  • D. 7:00 p.m.
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28 . At a certain high school, the respective weights for the following subjects are : General Math 3, Bangla 3, History 2, Science 2 and Art 1. What is a student's average whose marks were the following : Geometry 89, Bangla Literature 92, History 94, Biology 81, and Sculpture 85?
  • A. 85.7
  • B. 90.2
  • C. 87.5
  • D. 88.9
  • E. None of these
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29 . Average age of three brothers is 16 years . Average age of these brothers along with their father is 25 years. What is the age of their father ?
  • A. 42
  • B. 52
  • C. 41
  • D. 45
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30 . Average mark in Math in a class of 40 students is 45. Average mark of all the 30 boys is 50. Then the average mark obtained by the girls is :
  • A. 30
  • B. 35
  • C. 25
  • D. 40
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Bangladesh Bank - Assistant Director - 2010
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