886 . A jar contains red balls and green balls in the ratio 3:1. If the jar contains only the two types of balls, which of the following cannot be the number of balls in the jar ?
  • A. 96
  • B. 80
  • C. 72
  • D. 54
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887 . A jar contains white, red and green marbles in the ratio 2 : 3 : 4. Five more green marbles are added to make the ratio 2 : 3 : 5. How many white marbles are there in the jar?
  • A. 8
  • B. 10
  • C. 4
  • D. 6
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888 . A jar contains white, red and green marbles in the ratios 2: 3: 5 six more green marbles are added to the jars and then the ratio becomes 2: 3: 7 Hoe may white marbles are there in the jar?
  • A. 5
  • B. 6
  • C. 9
  • D. 10
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889 . A jogger running at 9 km/hr alongside a railway track is 240 meters ahead of the engine of a 120 meters long train running at 45 km/hr in the same direction. In how much time will the train pass the jogger?
  • A. 3.6 sec
  • B. 18 sec
  • C. 36 sec
  • D. 72 sec
  • E. None of these
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890 . A laborer is paid Tk.20 per hour for an 8-hour day. If he works overtime (above 8 hours) in a single day, he is paid 1.5 times the rate he is paid for regular hours. If the laborer receive Tk.200 for a single day's work. How long did he work on that day?
  • A. 9 hours 20 minutes
  • B. 8 hours 50 minutes
  • C. 6 hours 20 minutes
  • D. 9 hours 50 minutes
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891 . A ladder is placed against a wall such that its foot is at a distance of 2.5 m from the and its top reaches a window 6 m about ground. Find the length of the ladder.
  • A. 6.5 m
  • B. 8.5
  • C. 4.5
  • D. 2.5 m
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892 . A ladder rests against a wall that is perpendicular to the ground. If the bottom of the ladder is 4m away from the bottom of the wall, while the top of the ladders is at a height of 3m what is the length of he ladder?
  • A. 7m
  • B. 35m
  • C. 5m
  • D. 25m
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893 . A leading library charges c cents for the first week that a book is loaned and f cents for each day over one week. What is the cost for taking out a book for d days. Where d is greater than?
  • A. c +fd
  • B. cd
  • C. c +f(d-7)
  • D. cd +f
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894 . A line segment is drawn from point (8, -2) to point (4,6). The coordinates of the mid point of this line segment are--
  • A. (12, 4)
  • B. (12, 8)
  • C. (6, 4)
  • D. (6,2)
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895 . A loan was repaid in two annual installments of Tk.121 each. If the rate of interest be 10% per annum compounded annually the sum borrowed was.
  • A. 217.80
  • B. 280
  • C. 200
  • D. 210
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896 . A machine can copy six pages in 9 seconds. How many pages can it copy in 24 minutes?
  • A. 12
  • B. 16
  • C. 36
  • D. 960
  • E. None of these
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897 . A machine fills a bag with 7 ounces of potato chips in 3.5 seconds. At this rate, how many seconds will take the machine to fill a bag with 15 ounces of potato chips?
  • A. 6.5
  • B. 7.0
  • C. 7.5
  • D. 8.0
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898 . A machine produces 1000 units of plastic chair per hour. Working continuously at this rate how many plastic chair will this machine produce in a week?
  • A. 7000
  • B. 68000
  • C. 268000
  • D. 168000
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899 . A makes an article for Tk. 120 and sells it to B at a profit of 25% B sells it to C who sells it for Tk. 198 making a profit of 10%. What profit percent did B make ?
  • A. 25%
  • B. 20%
  • C. 16.55%
  • D. 15%
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900 . A man's age is now 3 times his son's age. Eight years back, the man's age was 5 times his son's age. What is the present age of the son?
  • A. 15
  • B. 20
  • C. 18
  • D. 16
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