2131 . In a 100m race, A beats B by 10m and C by 13m. In a race of 180m, B will beat C by--

A. 5.4m
B. 4.5m
C. 5m
D. 6m

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Answer: Option D

Explanation:

Hints: A:B = 100:90 ; A:C = 100:87

B/C = B/A × A/C = 90/100 × 100/87 = 30/29

যখন B 30 m যায়, C যায় (29/30 × 180) বা 174m

B beats C by = 180 - 174 = 6

2132 . In a 200 metres race A beats B by 35 m or 7 seconds. A's time over the course is :

A. 33 sec
B. 40 sec
C. 47 sec
D. None of these

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Answer: Option A

Explanation:

Hints : B runs 35m in 7 sec

B covers 200 m in ( 7/35 × 200) = 40 sec

B's time over the course = 40 sec

A's time over the course = (40 - 7) sec = 33 sec

2133 . In a 500m race, the ratio of the speeds of two comtestants A and B is 3 : 4. A has start of 140m. Then A wins by:

A. 60m
B. 40m
C. 20m
D. 10m

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Answer: Option C

Explanation:

Ajmal কে গন্তব্যে পোঁছাতে অতিক্রম করতে হয় (500 - 140) = 360 মিটার
Ajmal যখন 3 মিটার অতিক্রম করে Badal তখন অতিক্রম করে 4 মিটার
Ajmal " 360 " " " Badal " " "
4×360/3=480মিটার

অর্থাৎ Ajmal যখন 360 মিটার cover করে গন্তব্যে পোঁছে Badal তখন cover করে ৪৮০ মিটার।
সুতরাং Ajmal জয়লাভ করে (500 - 480) = 20 মিটারে ।

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

A. 81 liters
B. 71 liters
C. 56 liters
D. 50 liters

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Answer: Option A

Explanation:

In the initial mixture, the ratio of milk to water is 7:2. This means that there are 7 parts of milk and 2 parts of water in the mixture.

Given that the total volume of the mixture is 729 liters, we can calculate the amount of milk and water in the initial mixture as follows:

Amount of milk = (7/9) * 729 = 7 * 81 = 567 liters Amount of water = (2/9) * 729 = 2 * 81 = 162 liters

Now, we want to add some water to this mixture to achieve a new ratio of milk to water, which is 7:3.

Let's denote the amount of water to be added as "x" liters. Since we want the ratio of milk to water to be 7:3 in the new mixture, the amount of milk in the new mixture remains the same (567 liters), and the amount of water should be (3/7) times the amount of milk. So, we have:

Amount of water in the new mixture = (3/7) * Amount of milk in the new mixture

Now, let's calculate the amount of milk in the new mixture:

Amount of milk in the new mixture = 567 liters (unchanged)

Amount of water in the new mixture = (3/7) * 567 = 243 liters

In the new mixture, there are already 162 liters of water from the initial mixture. To achieve the desired ratio, we need to add 243 - 162 = 81 liters of water.

So, you need to add 81 liters of water to the initial mixture to get a new mixture containing milk and water in the ratio 7:3

সমন্বিত পাঁচ ব্যাংক || অফিসার ক্যাশ - 06.11.2021

A. 80%
B. 100%
C. 200%
D. 250%
E. None of these

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Answer: Option E

Explanation:

let, in 2007 was = 100

,, 2008 ,, = 20

,, 2009 ,, = 100

increase percentage = ( 100 - 20/20)

= 400% (answer)

2136 . In a box , there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ?

A. 1/3
B. 3/4
C. 7/19
D. 8/21

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Answer: Option A

Explanation:

7/(8+7+6)=7/21=⅓ .

Bangladesh Bank - Assistant Director - 2010

A. 3/4
B. 9/10
C. 5/6
D. 8/13

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Answer: Option C

Explanation:

Two Combined Bank Recruitment Test Post: Officer - 28/09/2018

A. Tk. 24,200
B. Tk. 36,300
C. Tk. 72,600
D. 48,400

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Answer: Option D

Explanation:

দেওয়া আছে, A : C = 2:1=6 : 3

A:B = 3:2=6 : 4

A:B:C=6:4:3

B's share= 157300 × 4/6+4+3

= 48400 টাকা

2139 . In a business A and C invested amounts in the ratio 2 : 1 whereas A and B invested amounts in the ratio 3 : 2 . If their annual profit be Tk. 157300, then B's share in the profit is

A. Tk. 24200
B. Tk. 24200
C. Tk. 48000
D. Tk. 48400

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Answer: Option D

Explanation:

Assume that investment of C = x
Then, investment of A = 2x Investment of B = 2A/3 = 4x/3 (since ratio of investment of A : B = 2 : 3 i.e B = 2A/3) A : B : C
= 2x : 4x/3: x
= 2 : 4/3 : 1
= 6 : 4 : 3
B's Share = 157300 × 4/(6 + 4 + 3) = 157300 × 4/13 = 12100 × 4 = Tk. 48400.

Officer (Cash) -Sonali Bank | BD Development | BD Krishi Bank - 12.10.2018

A. Tk. 120
B. Tk. 150
C. Tk. 175
D. Tk. 200
E. None of these

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Answer: Option C

Explanation:

ratio of the investment of Raj:Rafi:Rabi = 700*5:500*6:300*8

= 3500:3000:2400

= 35:30:24

so raj share = 445*35/(35 + 30 + 24) = 175 tk

2141 . In a certain code 'TABLE' is written as WDEOH. How would 'SKY' be written in that code?

A. TBN
B. VNB
C. BNY
D. NYB

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Answer: Option B

Explanation:

T এর দুটি বণৃ পরেরটি W
A এর দুটি বণৃ পরেরটি D
তেমনি
S এর দুটি বণৃ পরেরটি V
K এর দুটি বণৃ পরেরটি N
V এর দুটি বণৃ পরেরটি B

Bangladesh Bank - Officer - 2015

A. TK.6000
B. TK.22,500
C. TK.24000
D. TK.40,000
E. TK.60,000

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Answer: Option D

Explanation:

Total tax of assessed = ( 240×4) Tk. = 960Tk.

Tk. 4 is tax of Tk. 100

Tk.960 is tax of Tk. ( 100/4 ×960) = 24000 Tk.

So, 60% of x = 24000Tk.

60x×x /100 = 24000

x = 2400000/60 = 40000 Tk.

2143 . In a certain country a person is born every 7 seconds and a person dies every 13 seconds. Therefore, the birth and death rates account of a population growth rate of one person every-0

A. 6 seconds
B. 15.17 seconds
C. 20 seconds
D. None of these

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Answer: Option B

Explanation:

7 second এ জন্মগ্রহন করে 1 জন

1 second এ জন্মগ্রহন করে 1/ 7 জন

একইভাবে 13 second এ মৃত্যবরণ করে 1 জন

1 second এ মৃত্যুবরণ করে 1/ 13 জন

growth in 1 second = ( 1/7 - 1/13) = 6 / 91

6/91 জন জন্মগ্রহন করে 1 sec

1 জন জন্মগ্রহন করে 91 / 6 second = 15. 17 second এ।

2144 . In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of girls in the class?

A. 1 : 4
B. 1 : 3
C. 1 : 2
D. 2 : 3
E. None of these

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Answer: Option C

Explanation:

ধরি,বালক এর সংখ্যা, ক জন এবং বালিকা এর সংখ্যা, খ জন

অতএব তাদের অনুপাত= ক : খ

প্রশ্নমতে, ১/৬(ক+খ)=১/৪×খ

বা, ক+খ/৬=খ/৪

বা, ৬খ=৪ক+৪খ

বা, ২খ=৪ক

বা, খ= ২ক

অতএব, বালক ও বালিকা এর অনুপাত= ক : ২ক = ১ : ২

2145 . In a certain population, there are times as many people aged 21 or under as there are people over 21. The ratio of those 21 or under to the total population is :

A. 1 to 2
B. 1 to 3
C. 1 to 4
D. 2 to 3
E. 3 to 4

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Answer: Option E

Explanation:

Let the number of people over 21 years be x. 
Given that the number of people aged 21 or under  =  3x 
So total population  =  4x 
Required ratio  =  3x : 4x  =  3:4 
So the answer choice is (e) 3 to 4.

2131 . In a 100m race, A beats B by 10m and C by 13m. In a race of 180m, B will beat C by--

2132 . In a 200 metres race A beats B by 35 m or 7 seconds. A's time over the course is :

2133 . In a 500m race, the ratio of the speeds of two comtestants A and B is 3 : 4. A has start of 140m. Then A wins by:

2134 . In a 729 liters mixture of milk and water, the ratio of milk to water is 7:2. to get a new mixture containing milk and water in the ratio 7: 3, the amount of water to be added is-

2135 . In a book store, the sales of a book decreased by 80% from 2007 to 2008. If the sales in 2009 were the same as in 2007, would be the percentage increase in sales from 2008 to 2009?

2136 . In a box , there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ?

2137 . In a box three are 10 apples and 2/5th of the apples are rotten.If three apples are taken out from the box,what will be the probability that at least one apple is rotten.

2138 . In a business, A and C invested amounts in the ratio 2:1,whereas the ratio between amounts invested by A and B was 3:2. If Tk. 1,57,300 was their profit,how much amount did B receive ?

2139 . In a business A and C invested amounts in the ratio 2 : 1 whereas A and B invested amounts in the ratio 3 : 2 . If their annual profit be Tk. 157300, then B's share in the profit is

2140 . In a business Raj invested Tk. 700 for 5 months. Rafi invested Tk. 500 for 6 months and Rabi invested Tk. 300 for 8 months. If total profit was Tk. 445, how much money will Raj get as his share of profit?

2141 . In a certain code 'TABLE' is written as WDEOH. How would 'SKY' be written in that code?

2142 . In a certain community, property is assessed value. if a tax payer is assessed TK. 240 per quarter in property taxes, what is the appraised value of the property?

2143 . In a certain country a person is born every 7 seconds and a person dies every 13 seconds. Therefore, the birth and death rates account of a population growth rate of one person every-0

2144 . In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of girls in the class?

2145 . In a certain population, there are times as many people aged 21 or under as there are people over 21. The ratio of those 21 or under to the total population is :

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