3901 . Zakir spends 75% of his income. His income is increased by 20% and he increased his expenditure by 10%. His savings are increased by--

A. 75/2
B. 50
C. 10
D. 25

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Answer: Option B

Explanation:

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3902 . Zarina has started a wholesale jewelary making business. She makes 36 bracelets a day, and sells them to local shops for TK.180 a dozen. How much does Zarina make per week if she works 5 days a week ?

A. TK. 2,200
B. TK. 2,700
C. TK. 540
D. TK. 3,780
E. None of these

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Answer: Option B

Explanation:

She makes 36 pieces

12 pieces = 1 dozen

36 pieces = 3 dozen

So, she sales per day (180*3) = 540 Tk

As she works for 5 days in a week, so she can sale (540*5) = 2700 tk per week

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3903 . [3.75{7.8 - 2.3(12.75 - 9.25)}] - 5 =?

A. 1.7
B. 1.5
C. 1.4
D. 2.5

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Answer: Option D

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3904 . {(am)n}p = ?

A. amnp
B. a12mnp
C. am + n + p
D. a12m12n12p

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Answer: Option B

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3905 . |−4||+4|=?

B. 4
C. 8
D. 16

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Answer: Option C

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3906 . Current age of Zanil's father is three times of Zamil. After 16 years from now father's age will be twice of Zamil. What is the current age of Zamil?

A. 16
B. 32
C. 48
D. 64

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Answer: Option A

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বাংলাদেশ অর্থনৈতিক অঞ্চল কর্তৃপক্ষ (BEZA) | সহকারী ব্যবস্থাপক | ৩০.১১.২০১৮

A. vegetables are subject to downward price control in city area by the government
B. City dwellers purchase vegetable produced only in the city area
C. Vegetables are mostly common item of every meal of a city dweller
D. Abundantly produced rural vegetables area not allowed to sell in city area

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Answer: Option D

Explanation:

To weaken the claim that "Price of vegetables is very high in city area in comparison to that in rural area," we need to find a fact that contradicts or undermines this claim. Let's analyze the options provided:

A. There is least demand for vegetable in city area.
This fact supports the claim that the price of vegetables is high in the city area because low demand could contribute to higher prices due to limited supply and higher transportation costs.

B. Vegetables are subject to downward price control in city area by the government.
This fact weakens the claim by suggesting that the government has implemented measures to control and regulate vegetable prices in the city area, which could result in lower prices.

C. City dwellers purchase vegetable produced only in the city area.
This fact does not weaken the claim but rather supports it. If city dwellers exclusively purchase vegetables produced in the city area, it implies a limited supply, which can contribute to higher prices.

D. Vegetables are mostly a common item of every meal of a city dweller.
This fact does not weaken the claim but rather supports it. If vegetables are a common item in every meal of city dwellers, it suggests high demand, which can contribute to higher prices.

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Bangladesh Bank - Assistant Director - 2010

A. 27km/hr
B. 25km/hr
C. 20km/hr
D. 23km/hr

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Answer: Option D

Explanation:

Let speed of the boat is u kmph

Speed of the stream is v = 3 kmph

Time taken t = 39 min = 39/60 hour

Distance s = 13 km

We have

u - v = s/t

u - v = 13/(39/60) = (13×60)/39 = 20

= > u - 3 = 20

= > u = 20 + 3 = 23

Ans 23 kmph.

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সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || অফিসার (জেনারেল) (08-03-2024)

A. 36
B. 24
C. 18
D. 12
E. None of these

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Answer: Option A

Explanation:

The maximum number of marbles in a single package is the HCF (Highest Common Factor) of 72 and 108.

72 = 2 x 2 x 2 x 3 x 3

108 = 2 x 2 x 3 x 3 x 3

∴HCF of 72 and 108 is = 2 x 2 x 3 x 3 = 36.

So the max number of marbles that can go into a package is 36.

ans: 36

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3910 . A person who has an income of Tk. 10,00 pays what percent of his or her income in taxes?

A. 2%
B. 2.2%
C. 2.5%
D. 3%

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Answer: Option B

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Bangladesh Bank - Assistant Director - 2015

A. 100
B. 20
C. 45
D. 90

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Answer: Option C

Explanation:

Everybody does 9 handshakes - but then they are counted twice, so 10 * 9 /2 = 45.

Alternative calculation:

Person no 1 does 9 handshakes

Person no 2 does 8 - he already has shaken hands with no1

And so on …

person no 9 does 1 handshake with person no 10

Btw person no10 has already shaken everybody’s hand, ok

So we get 9 + 8 + … + 1

The seven years old Gauß might tell you that this is 10 * 9 / 2 = 45

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Bangladesh bank - officer ( general) - 27.04.2018

A. 1.5
B. 3
C. -2
D. -2.5

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Answer: Option C

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বাংলাদেশ ব্যাংক অফিসার ০২ -১২-২০২২

A. 66.67
B. 15
C. 6.67
D. 1.5

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Answer: Option D

Explanation:

x এর 20% = 0.03

বা, x এর 20/100 = 0.03

বা, x/5 = 0.03

বা, x = 0.15

ans : 0.15

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Bangladesh Bank - Assistant Director - 2004

A. 80
B. 50
C. 40
D. 9

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Answer: Option A

Explanation:

Let, the number is x

Accordingly,

20%× 80% × x = 12.8

⇒ x = (128 × 100 × 100)/(20 × 80 × 10)= 80.

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Bangladesh Bank - Assistant Director - 2015

A. 22
B. 40
C. 42
D. 12

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Answer: Option D

Explanation:

Hints : 2x - y = 4
3(2x - y) = 3 × 4 [ both side 3 multiply]
6x - 3y = 12

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DESCO Recruitment Test 2022 | Sub Station Attendant | 17.09.2022

3901 . Zakir spends 75% of his income. His income is increased by 20% and he increased his expenditure by 10%. His savings are increased by--

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3902 . Zarina has started a wholesale jewelary making business. She makes 36 bracelets a day, and sells them to local shops for TK.180 a dozen. How much does Zarina make per week if she works 5 days a week ?

3903 . [3.75{7.8 - 2.3(12.75 - 9.25)}] - 5 =?

3904 . {(am)n}p = ?

3905 . |−4||+4|=?

3906 . Current age of Zanil's father is three times of Zamil. After 16 years from now father's age will be twice of Zamil. What is the current age of Zamil?

3907 . " Price of vegetables is very high in city area in comparison to that in rural area." This claim is weakened by the following facts except :

3908 . A boat goes 13km upstream in 39 minutes. The speed of stream is 3km/hr. The speed of boat in still water is-

3909 . A man has 72 green marbles and 108 red marbles. He decides to pack them into packets of the same size, each containing either all red of all green marbles. What is the maximum number of marbles he can put in each packet?

3910 . A person who has an income of Tk. 10,00 pays what percent of his or her income in taxes?

3911 . At the end of a banquet 10 people shake hands with each other . How many handshakes will be in total?

3912 . If (3x+2y)=8 and (2x-2y)=2, then find the value of (4-3x)

3913 . If 20% of X is 0.03 the X equals to

3914 . If 20 percent of 80 percent of a number is 12.8, then what is the number ?

3915 . If 2x+y =4, then how much is 6x-3y?

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