136 . A sold a watch to B at a gain of 20% and B sold it to C at loss of 10%. If C bought the watch for TK.216 at what price did A purchase it?

A. Tk.200
B. Tk.216
C. Tk.250
D. Tk.376

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Answer: Option A

Explanation:

At 10% loss so 90% = 216 then 100% = 240

at 20% profit so 120% = 240 then 100% = 200 taka

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Senior Officer- 8 Bank Recruitment Test 31-08-2018

A. 2 meter
B. 4 meter
C. 6 meter
D. 8 meter

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Answer: Option B

Explanation:

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বাংলাদেশ ব্যাংক || সহকারী পরিচালক 28-10-2022

A. 82
B. 85
C. 79
D. 78.75

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Answer: Option A

Explanation:

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বাংলাদেশ ব্যাংক || সহকারী পরিচালক 28-10-2022

A. 200
B. 250
C. 300
D. 450
E. 400

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Answer: Option A

Explanation:

Let, the original number = 100
20% reduced = 100 - 100 of 20% = 80
Then, 20% increased = 80 + 80 of 20% = 96
The difference = 96-80 = 16
16 difference then original number = 100
1 difference then original number = 100/16
8 difference then original number = (100×8)/16 = 50

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Bangladesh Bank - Assistant Director - 2013 ||

A. Tk. 2050
B. Tk. 2500
C. Tk. 2125
D. Tk. 2245

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Answer: Option A

Explanation:

The sum = Tk. (6000 × 100)/(5 × 6) = Tk. 20000
Compound Interest = (20000 × 105/100 × 105/100) – 20000 = Tk. 2050. Ans: A

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

A. 20%
B. 15%
C. 5%
D. 30%
E. 0%

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Answer: Option A

Explanation:

দুই আলাদা % এর থেকে common 25% বিয়োগ দিয়ে result টি হবে যা অন্তত news অথবা paper দেখে।

যারা দেখে না = 100 - ( 65 + 40 - 25) = 20%

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142 . A tank can be filled with water by two pipes A and B together in 36 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in -

A. 45 munutes
B. 60 munutes
C. 75 minutes
D. 90 munutes

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Answer: Option D

Explanation:

Let the pipes fill the tank in x minutes.
Part of the tank filled by pipes A and B in one minute: 1/36
Part of the tank filled by pipe A in 1 minute = 1/36−1/x
According to the question,
30 × (1/x) + (1/36−1/x) = 1
⇒30x + 10/9−40/x = 1
⇒10/x = 1/9
Hence, x = 90 minutes.

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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯

A. 300
B. 500
C. 700
D. 600
E. None of them

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Answer: Option D

Explanation:

Let, Tk was deposited at 5%

so, (1200 - x) was at 7%

Total interest = 72 = . 5 × x + ( 1200 - x) ×. 07

= . 05x + 84 - . 07x

x (. 05 - . 07) = 72 - 84

x × ( - .02) = - 12

x = 12/.02 = 600

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Bangladesh Bank - Assistant Director - 2012

A. 10%
B. 12.5%
C. 13.6%
D. 15%

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Answer: Option B

Explanation:

Let list price is 100
Selling price (SP) at discount = 100-28 = Rs 72
Therefore Cost price = 72/90 x 100 = 80
When chair is sold for Tk. 90
profit = 90/80 x 100 - 1= 12.5%

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145 . A train 125 m long passes a person , running at 8 km / hr in the same direction in which the train is going in 25 seconds . The speed of the train is :

A. 22
B. 36
C. 30
D. 26

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Answer: Option D

Explanation:

Speed of the train relative to man = (125/25) m/sec = 5 m/sec.
[5 x (18/5)] km/hr = 18 km/hr.
Let the speed of the train be 'S' km/hr.
Then, relative speed = (S - 8) km/hr.
S - 8 = 18 = > S = 26 km/hr.

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Officer (General) -Ansar VDP Unnayan | BD House Building Finance Corporation 28.09.2018

A. 52
B. 56
C. 54
D. 58

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Answer: Option C

Explanation:

Speed of the first train = 150/15 = 10 mps.
speed of the second train = x mps.
According to the question:
x + 10 = (150 + 150)/8
x = 27.5 mps = 27.5 × 3600/1000 = 99 kmph. Ans: D

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Senior Officer- 8 Bank Recruitment Test 31-08-2018

A. 38.40 sec
B. 35 sec
C. 38 sec
D. 40 sec

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Answer: Option A

Explanation:

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জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা-(NSI) Assistant Director- Research officer &amp- Assistant Programmer-০৮/১০/২০২১

A. 40 seconds
B. 42 seconds
C. 45 seconds
D. 48 seconds

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Answer: Option A

Explanation:

Hints: train অতিক্রম করে নিজের length এবং bridge এর length 45km/hr = ( 45÷3.6)ms - 1 = 12.5 ms - 1

Time = 140 + 360 /12.5 = 40seconds.

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149 . A train leaves a station A at 7 am and reaches another station B at 11 am. Another train leas B at 8 am and reaches A at 11:30 am. The two trains cross one another at

A. 8:36 am
B. 8:56am
C. 9.00 am
D. 9:24 am

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Answer: Option D

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Senior Officer- 8 Bank Recruitment Test 31-08-2018

A. 48km /hr
B. 54 km / hr
C. 60 km / hr
D. 72 km / hr

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Answer: Option C

Explanation:

Take the speed of the second train =
x
km/hr
They will have to cover a distance = sum of the lengths of the trains ( 150 + 100 = 250 m = 0.25 km )
Obtain their relative speed( x + 30 ) km/h & find out the time taken ( 10 sec = 10/3600 hr )
Equate it to 10s and solve for
( x + 30 ) =( 0.25/ 10 ) * 3600
x = 60 km/hr

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Sonali &amp-Janata Bank | Officer (IT)| 04.01.2019

136 . A sold a watch to B at a gain of 20% and B sold it to C at loss of 10%. If C bought the watch for TK.216 at what price did A purchase it?

137 . A square room has a square carpet symmetrically placed in it. This leaves an uncovered area of 9 meter2. The area of the whole romm is 25 meter2 . What is the length of the one side the carpet?

138 . A student obtained 60, 75 and 85 marks respectively in 3 monthly examinations in physics and 95 marks in the final examination. The 3 monthly examinations are of equal weightage whereas the final examination is weighted . What is his average mark physics?

139 . A students first reduced a number by 20% and then increased it again by 20% . If the difference between the last number and the original number is 8, then the original number was :

140 . A sum fetches a simple interest of Tk. 6000 at the rate of 5% p.a. in 6 years . what would be the compound interest earned at the same rate of interest and the same principal in 2 years?

141 . A survey of the town Sherpur found that 70% of the people watched the news on TV, 35% of the people read the news on newspaper and watched the TV and 25% read a newspaper and watched the TV news. What percentage of the people either watched the news on TV nor read it on the newspaper?

142 . A tank can be filled with water by two pipes A and B together in 36 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in -

143 . A total of TaKa 1200 is deposited in two savings accounts for one year, part at 5% and the remainder at 7% . If TaKa 72 was earned in interest , how much was deposited at 5% ?

144 . A trader makes a loss of 10% by selling a chair at a discount of 28% on the listed price.What will be his loss/profit if he sells the chair at 90% of its listed price?

145 . A train 125 m long passes a person , running at 8 km / hr in the same direction in which the train is going in 25 seconds . The speed of the train is :

146 . A train 150 m long crosses a milestone is 15 seconds and crosses another train of the same lengh travelling in the opposite direction in 12 seconds. The speed of the second train in km/hr is.

147 . A train 220 m long is moving at 45km/h. The time taken by the train to crosse tunned 260m long is-

148 . A train 360 m long is running at a speed of 45 km/hour. In what time will pass a bridge 140 m long?

149 . A train leaves a station A at 7 am and reaches another station B at 11 am. Another train leas B at 8 am and reaches A at 11:30 am. The two trains cross one another at

150 . A train of length 150 m takes 10 seconds to cross another train 100 m long coming from the opposite direction . If the speed of first train is 30 km / hr, what is the speed of second train?

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