766 . A car wash center washes 10 cars in half an hour. At this rate how many cars can it wash in 4 hours?
  • A. 60
  • B. 20
  • C. 96
  • D. 80
  • E. None of them
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767 . A carpenter needs 4 boards, each 2 feet 10 inches long,. If wood is sold only by the feet, what is the minimum length, in feet, of wood he must buy?
  • A. 9
  • B. 10
  • C. 11
  • D. 12
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768 . A carpet that measures 5 ft by 9 ft covers 75% of a floor. What is the area of the floor?
  • A. 60
  • B. 100
  • C. 80
  • D. 90
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769 . A carpet that measures 6 ft by 8 ft covers 60% of a floor. What is the area of the floor?
  • A. 60
  • B. 100
  • C. 80
  • D. 90
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770 . A cement mixture is composed of 3 elements. By weight, 1/3 of the mizture is sand, 3/5 is water and the remaining 12 pounds of the mixture is gravel. What is the weight of the entire mixture in pounds?
  • A. 60
  • B. 80
  • C. 90
  • D. 180
  • E. None of these
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বাংলাদেশ গ্যাস ফিল্ড | সহকারী-ব্যবস্থাপক | 03-12-2021 || 2021
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771 . A certain amount is distributed among A, B and C. A gets 3/10 and B gets 1/4 of the whole amount, If C gets Tk. 81, then B gets:
  • A. Tk. 45
  • B. Tk. 32
  • C. Tk. 36
  • D. Tk. 40
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772 . A certain amount was divided between A and B in the ratio 4 : 3. If B's share was Tk. 4800, the total amount was:
  • A. Tk. 6400
  • B. Tk. 11,200
  • C. Tk. 19,200
  • D. Tk. 39,200
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773 . A certain class is divided into two section A and B of equal numbr of students. If the ratio of girls to buys for whole class is 3/5 and the ration of girls to boys in section A is 5/7. What is the ratio o fgirls to biys in section B?
  • A. 3 to 1
  • B. 2 to 1
  • C. 1 to 3
  • D. 1 to 2
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প্রবাসী কল্যাণ ব্যাংক-সিনিয়র অফিসার-09-10-2021
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774 . A certain jar contain 60 jellybeans where 22 white, 18 green, 11 yellow, 5 red and 4 purple. If a jellybean is to be chosen at random, what is the probability that the jellybean will be neither red not purple?
  • A. 0.09
  • B. 0.85
  • C. 0.54
  • D. 0.91
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Dhaka Bank Ltd | Probationary Officer | 05-02-2021
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775 . A certain machine produces 8 toys every 4 seconds. If the machine operates without interruption, how many toys will it produce in 2 minutes?
  • A. 60
  • B. 120
  • C. 240
  • D. 480
  • E. 960
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776 . A certain number of men can finish a piece of work in 100 days. If , there were 10 men less, it would take 10 days more for the work to be finished. How many men were there originally ?
  • A. 75
  • B. 82
  • C. 110
  • D. 100
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777 . A certain pole casts a shadow 24 feet long. At the same time another pole which is 3 feet high casts a shadow 4 feet long. How high is the first pole given that the heights and shadows are in proportion?
  • A. 20
  • B. 21
  • C. 18
  • D. 19
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778 . A certain river has a current of 3 miles per hour. A boat takes twice as long to travel upstream between two points as it does to travel downstream between the same two points. What is the speed of the boat in still water?
  • A. 3 miles per hour
  • B. 6 miles per hour
  • C. 9 miles per hour
  • D. 12 miles per hour
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779 . A certain river has a current of 4 miles per hour.A boat takes twice as long to travel upstream between two points as it does to travel downstream between the same two points . What is the speed of the boat in still water ?
  • A. 6 miles per hour
  • B. 8 miles per hour
  • C. 12 miles per hour
  • D. cannot be determined
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780 . A certain sum of money at simple interest amount to Tk.1012 in 5/2 years and Tk.1067.20 in 4 years, the rate of interest per annum is--
  • A. 4%
  • B. 5%
  • C. 2.5%
  • D. 3%
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