841 . 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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Answer: Option A

Explanation:

842 . 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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Answer: Option A

Explanation:

জনতা ও রূপালী ব্যাংক- অফিসার ১৩.১২.২০১৯

A. 7m
B. 35m
C. 5m
D. 25m

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Answer: Option C

Explanation:

Applying the Pythagorean theorem:

L^2 = (distance to the wall)^2 + (height)^2 L^2 = 4^2 + 3^2 L^2 = 16 + 9 L^2 = 25

Taking the square root of both sides:

L = √25 L = 5

Therefore, the length of the ladder is 5 meters.

844 . A large cube is formed from the material obtained by melting three smaller cubes of 3,4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

A. 2 : 1
B. 3 : 2
C. 25 : 18
D. 27 : 20
E. None of these

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Answer: Option C

Explanation:

রবীন্দ্রনাথ ঠাকুরের লেখা নাট্যগ্রন্থ ‘রক্ত করবী’ । অন্যদিকে আনন্দ মঠ ও দুর্গেশনন্দিনী উপন্যাসের লেখক হলেন বঙ্কিমচন্দ্র চট্টোপাধ্যায়। বিভূতিভুষণ বন্দ্যোপাধ্যায়ের উপন্যাস পথের পাঁচালী।

845 . 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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Answer: Option C

Explanation:

846 . 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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Answer: Option D

Explanation:

Coordinates of the midpoint of a line segment made by joining two points are the averages of the respective coordinates of the two points.

So, coordinate of the midpoint is {(8 + 4)/2 , ( - 2 + 6)/2} = (6,2)

847 . 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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Answer: Option D

Explanation:

848 . 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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Answer: Option D

Explanation:

24 min × 60 = 1440 sec.

Needs 9 sec to copy 6 pages

1 sec to copy 6/9 pages

1440 sec to copy = (6×1440p/9 = 960 pages

849 . 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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Answer: Option C

Explanation:

Filling rate = 7/3.5 = 2 ounces per second

Time required = 15/2 = 7.5 seconds

850 . 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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Answer: Option D

Explanation:

Total hours in a week = 7×24 = 168 hours

Total production = 168×1000 = 168000 units

851 . 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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Answer: Option B

Explanation:

25 %লাভে A এর বিক্রয়মূল্য ( 120 + 120 × 25/100) টাকা = 150 টাকা।

B এর ক্রয়মূল্য = 150 টাকা।

10% লাভে,

C এর বিক্রয়মূল্য 110 টাকা হলে ক্রয়মূল্য 100 টাকা

C এর বিক্রয়মূল্য 198 টাকা হলে ক্রয়মূল্য ( 100 × 198 /110) = 180 টাকা।

B এর বিক্রয়মূল্য 180 টাকা।

B এর লাভের হার = ( 180 - 150 /150 × 100) % = ( 30/150 × 100) % = 20%

852 . 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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Answer: Option D

Explanation:

Let, present age of the son is x

So, 3x = 5 ( x - 8) + 8

3x = 5x - 40 + 8

2x = 32

x = 16.

সমন্বিত ব্যাংক অফিসার (ক্যাশ) || (02-06-2023)

A. 48
B. 50
C. 45
D. 47

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Answer: Option A

Explanation:

854 . A man's investment doubles in every 5 years. If he invested Tk. 5,000 in each of the years 2010, 2015, 2020 then what will be the amount received by him in 2025?

A. Tk. 30,000
B. Tk. 70,000
C. Tk. 80,000
D. Tk. 1,50,000

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Answer: Option B

Explanation:

2015: (5000*2)+5000= 15000tk.

2020: (15000*2)+5000= 35000tk

2025: 35000*2= 70000tk

বাংলাদেশ ব্যাংক অফিসার ০২ -১২-২০২২

A. 7
B. 16
C. 9
D. 8

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Answer: Option D

Explanation:

40 ঘন্টার জন্য regular pay ( 30 × 40) টাকা = 1200 টাকা।

Overtime এর টাকার পরিমান ( 1680 - 1200) টাকা = 480 টাকা |

যেহেতু, Overtime এর প্রতিদিনের টাকার পরিমান Regular Payment এর দ্বিগুন , সেহেতু overtime এর সময় ( 480 ÷ ( 30 × 2) ) ঘন্টা = 8 ঘন্টা |

সমন্বিত ৫ ব্যাংক || অফিসার (ক্যাশ) (11-03-2022)

841 . 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?

842 . 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.

843 . 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?

844 . A large cube is formed from the material obtained by melting three smaller cubes of 3,4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

845 . 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?

846 . A line segment is drawn from point (8, -2) to point (4,6). The coordinates of the mid point of this line segment are--

847 . 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.

848 . A machine can copy six pages in 9 seconds. How many pages can it copy in 24 minutes?

849 . 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?

850 . 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?

851 . 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 ?

852 . 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?

853 . A man's basic pay for a 40 hours week is Tk.20. Over time is paid for at 25% above the basic rate. In a certain week he worked over time and his total wage was Tk.25. He therefore worked for a total of--

854 . A man's investment doubles in every 5 years. If he invested Tk. 5,000 in each of the years 2010, 2015, 2020 then what will be the amount received by him in 2025?

855 . A man's regular pay Tk. 30 per hour up to 40 hours. Overtime is twice the regular payment. If he was paid Tk. 1680, how many hours overtime did he work?

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