1861 . If 4 workers can do a job in 48 days, how long will it take 3 workers to finish the same job ?

A. 76
B. 72
C. 70
D. None of these

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Answer: Option D

Explanation:

4 workers can do a job in 48 days
1 worker can do the job in (48x4) days
3 workers can do the job in (48x4)/3 days = 64 days

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Bangladesh Bank - Assistant Director - 2001

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1862 . If 4 years' interest of Principal tk.500 and 5 years interest of Principal Tk. 600 are Tk. 500 in total , what is the rate of interest ?

A. 5%
B. 8%
C. 10%
D. 12%

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Answer: Option C

Explanation:

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1863 . If 40% of all women are voters, and 52% of the population is women, what percent of the population are women voters?

A. 18.1
B. 20.8
C. 26.4
D. 40

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Answer: Option B

Explanation:

মনে করি, মোট জনসংখ্যা = 100 জন

Women দের সংখ্যা = 52 জন

Women দের ভোটার সংখ্যা = 52×(40/100)

= 20.8

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1864 . If 40% of all women are voters and 52% of the population is women, what percent of the population are women voters?

A. 20.8
B. 19.2
C. 26.4
D. 40

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Answer: Option A

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1865 . If 40% of the workers are graduate, and of them 15% are male, what percent of the workers are male and graduare?

A. 4%
B. 6%
C. 15%
D. none of these

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Answer: Option B

Explanation:

Graduate workers = 40% of all workers

Male graduate workers = 15% of graduate workers = 15% of (40% of all workers) = (15/100) of 40% of all workers = 6% of all workers

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1866 . If $4^{2 x + 1} = 32$ then $x = ?$

A. $2$
B. $3$
C. $\frac{3}{4}$
D. $\frac{4}{3}$

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Answer: Option C

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Assistant Director (General) 06.07.18

A. 28
B. 4.5
C. 4
D. 13
E. None of these

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Answer: Option E

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1868 . If $4 b^{2} + \frac{1}{b^{2}} = 2,$ then the value of $8 b^{3} + \frac{1}{b^{3}} = ?$

A. $0$
B. $1$
C. $2$
D. $3$

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Answer: Option A

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সমন্বিত পাঁচ ব্যাংক || অফিসার ক্যাশ - 06.11.2021

A. 63n/4
B. 9n/28
C. 7n/9
D. 28n/9

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Answer: Option A

Explanation:

4m=9n

or, m=9n/4

So, 7m=7×(9n/4)=63n/4

(ans)

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1870 . If $4^{x + y} = 1$ and $4^{x - y} = 1$ then the values of x and y respectively are-

A. $- \frac{1}{2} a n d \frac{1}{2}$
B. $- \frac{1}{2} a n d - \frac{1}{2}$
C. $\frac{1}{2} a n d - \frac{1}{2}$
D. $\frac{1}{2} a n d \frac{1}{2}$

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Answer: Option C

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Janata Bank PLC || Officer (Rural Credit) (27-10-2023) || 2023

A. x < 7
B. x < 13
C. x>9
D. x>10
E. None of these

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Answer: Option B

Explanation:

Here, 4x - 7 < 2x + 13

or, 4x - 2x < 13 + 7

or, 2x < 20

or, x < 10

So, the statement x < 13 must be true.

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1872 . If 4x larger than the sum x & 3y by 9, then x is larger than y by how much?

A. 3
B. 6
C. 9
D. 12

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Answer: Option A

Explanation:

Here, 4x = x + 3y + 9

or, 4x - x - 3y = 9

or, 3x - 3y = 9

or, 3(x - y) = 9

or, x - y = 9/3 = 3

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1873 . If 4y-3x=5, what is the smallest integer value of x for which y>100?

A. 130
B. 131
C. 132
D. 395
E. None of these

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Answer: Option C

Explanation:

4y - 3x = 5

4y = 5 + 3x

y = 5 + 3x /4

শর্তমতে, (5 + 3x)/4 > 100

5 + 3x > 400

3x > 395/3

x > 131.67

যেহেতু x এর মান হবে ক্ষুদ্রতম পূর্ণসংখ্যা

x = 132

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1874 . If 5% is gained by sellign an article for Tk 350 then cost of the article is-

A. Tk 180
B. Tk 150
C. Tk 200
D. Tk 250

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Answer: Option C

Explanation:

Hints: Let cost price of an article x

When SP is 340 Tk, then gain % = 340 - x /x ×100

When SP is increased, if 5% more is gained by selling an article for 350 TK. than by selling if for 340 TK.

Then, [ (350 - x)/x ×100] - [ (340 - x)/x × 100 ] = 5

100/x [ 350 - x - 340 + x ] = 5

100/x [10] = 5

x = 1000/5 = 200 TK.

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সমন্বিত ৭ ব্যাংক ও ১টি আর্থিক | সিনিয়র_অফিসার | 27-11-2021

A. 11/3
B. 3
D. 3/4

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Answer: Option B

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1861 . If 4 workers can do a job in 48 days, how long will it take 3 workers to finish the same job ?

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1862 . If 4 years' interest of Principal tk.500 and 5 years interest of Principal Tk. 600 are Tk. 500 in total , what is the rate of interest ?

1863 . If 40% of all women are voters, and 52% of the population is women, what percent of the population are women voters?

1864 . If 40% of all women are voters and 52% of the population is women, what percent of the population are women voters?

1865 . If 40% of the workers are graduate, and of them 15% are male, what percent of the workers are male and graduare?

1867 . If 4a+4b+4c+4d=112, what is the average of a,b,c and d ?

1869 . If 4m =9n, what is the value of 7m, in terms of n?

1871 . If 4x-7 <2x+13, then which of the following must be true?

1872 . If 4x larger than the sum x & 3y by 9, then x is larger than y by how much?

1873 . If 4y-3x=5, what is the smallest integer value of x for which y>100?

1874 . If 5% is gained by sellign an article for Tk 350 then cost of the article is-

1875 . If 5(3x - 7) = 20, then what is the value of (3x - 8)?

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