151 . 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?

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

View Answer	Favorite Question

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

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

প্রিমিয়াম প্ল্যান: ১ মাস

99 ৳

৩০ দিনের জন্য সকল লাইভ এবং আর্কাইভ মডেল টেস্ট, প্রশ্ন ব্যাংক ও লেকচার শিট সহ অ্যাপ এর প্রিমিয়াম সব এক্সেস পাবেন।

সাবস্ক্রিপশন লিংক

152 . 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?

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

View Answer	Favorite Question

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%

153 . 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

View Answer	Favorite Question

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.

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

View Answer	Favorite Question

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

Bangladesh Bank - Assistant Director - 2012

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

View Answer	Favorite Question

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%

156 . 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

View Answer	Favorite Question

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.

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

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

View Answer	Favorite Question

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

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

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

View Answer	Favorite Question

Answer: Option A

Explanation:

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

View Answer	Favorite Question

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.

160 . 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

View Answer	Favorite Question

Answer: Option D

Explanation:

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

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

View Answer	Favorite Question

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

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

A. 4:00
B. 5:00
C. 6:00
D. 7:00
E. 8:00

View Answer	Favorite Question

Answer: Option B

Explanation:

6:00 in evening in Chicago = 7:00 in evening in New York. So, the train was in Chicago 7:00 in the evening, New York time.

The trip took T = D/R = 840/60 = 14 hours. Therefore, the train depart from New York at 7:00 - 14 hours = 5:00 in the morning, New York time.

163 . A train which travels at a uniform speed due to some mechanical fault after traveling for an hour goes at 3/5th of the original speed and reached the destination 2 hours late. If the fault had occurred after traveling another 50 miles, the train would ha

A. 280
B. 300
C. 310
D. 320
E. 305

View Answer	Favorite Question

Answer: Option B

Explanation:

Let, the original speed is x and 3/5 th of original speed is 0.6x

50/0.6x - 50/x = 40/60
(250 - 150)/3x = 2/3
100/3x = 2/3
6x = 300
x = 50

3/5 of 50 = 30
speed reduces by = 50 - 30 = 20
It is late by 2 hours and by this time it goes 30*2 = 60
If the train goes with its original speed it took 60/20 = 3 hours after the first hour. That means total 4 hours.
Therefore, total distance covered

Bangladesh Bank - Assistant Director - 2011

A. 1:10pm
B. 12:55pm
C. 1:05pm
D. 1:08pm
E. 12:50pm

View Answer	Favorite Question

Answer: Option A

Explanation:

The time difference = 1pm - 7 pm = 6 hour = 360 minutes

3 minute gains from 5 second

1 minute gains from 5/3 second

360 minute gains from (5×360)/3 second = 600 second = 10 minute

So, at 1 PM, the watch will indicate = 1PM + 10 minute = 1 : 10 PM

Bangladesh Bank - Assistant Director - 2013 ||

A. 10
B. 12
C. 14
D. 16

View Answer	Favorite Question

Answer: Option B

Explanation:

In 1 hr, the tank is filled = 1/8 - 1/16 = 1/16
In 8 hrs " " " " = 8/16 = 1/2
Now,
1/8 part is filled by tap - 1 in 1 hour
1/2 part is filled by tap - 1 in = 8/2 = 4 hrs
So, the required time = 8 + 4 = 12 hrs

Sonali- Rupali- Bangladesh Krishi- Rajshahi krishi unnayn-Investment Corporation of Bangladesh | 30.11.2018

151 . 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?

152 . 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?

153 . 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 -

154 . 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% ?

155 . 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?

156 . 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 :

157 . 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.

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

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

160 . 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

161 . 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?

163 . A train which travels at a uniform speed due to some mechanical fault after traveling for an hour goes at 3/5th of the original speed and reached the destination 2 hours late. If the fault had occurred after traveling another 50 miles, the train would ha

164 . A watch which gains 5 seconds in 3 minutes was set right at 7am . In the afternoon of the same day when the true time is 1 pm, the watch will indicate :

165 . A water tank has two taps ( Tap-1 and Tap-2) : Tap-1 can fill a tank in 8 hours and Tap-2 can empty the tank in 16 hours . How long will they take to fill the tank if both taps are opened simultaneously but Tap -2 is closed after 8 hours?

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