976 . A person crosses a 600m long street in 5 minutes. What is his speed in km per hour ?

A. 3.6
B. 7.2
C. 8.4
D. 10

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Answer: Option B

Explanation:

Hints : distance = 680 meter ; time = 5 minutes = 5 × 60 seconds = 300 seconds

speed = distance / time = 600/300 = 2m/s = 2 × 18/5 km/hr = 7.2 km/hr

977 . A person deposited Tk. 400 for 2 years, Tk. 550 for 4 years and Tk. 1200 for 6 years. He received the total simple interest of Tk. 1020. The rate of interest per annum is

A. 10%
B. 5%
C. 15%
D. 20%

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Answer: Option A

Explanation:

ধরি, সুদের হার r %

400 × 2 × r/100 + 550 × 4 × r/100 + 1200 × 6 × r/100 = 1020

8r + 22r + 72r = 1020

102r = 1020

r = 10 %

978 . A person has Tk. 950 consisting of the notes of Tk. 500, Tk. 100, Tk. 50 and Tk. 10. How many notes should at least be there of Tk. 50?

A. none
B. 1
C. 2
D. 3
E. 5

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Answer: Option C

Explanation:

1, tk 500 note is 500×1= 500

1, tk 100 note is 100×1= 100

25, tk 10 note is 10×25= 250

then,, 2, tk 50 note is 50×2= 100

Total note is (1+1+25+2)= 29

Total amount is=500+100+250+100= 950

Ans: 2

Sonali- Janata &amp- Agrani Bank Offier (Cash Recruitment) 22.02.2008

A. None
B. 1
C. 2
D. 3

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Answer: Option C

Explanation:

1, tk 500 note is 500×1= 500

1, tk 100 note is 100×1= 100

25, tk 10 note is 10×25= 250

then,, 2, tk 50 note is 50×2= 100

Total note is (1+1+25+2)= 29

Total amount is=500+100+250+100= 950

Ans: 2

980 . A person has TK. 950 in 29 notes consisting of TK. 500,100, 50 and 10. How many notes should at least be in TK. 50 ?

A. 1
B. 2
C. 5
D. None of these

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Answer: Option B

Explanation:

1, tk 500 note is 500×1= 500

1, tk 100 note is 100×1= 100

25, tk 10 note is 10×25= 250

then,, 2, tk 50 note is 50×2= 100

Total note is (1+1+25+2)= 29

Total amount is=500+100+250+100= 950

Ans: 2.

Bangladesh Bank - Officer - 2001

A. Tk. 1580
B. Tk. 1180
C. Tk. 1260
D. Tk. 1225

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Answer: Option C

Explanation:

For 5% loss, buying price of watch = (1140*100)/95 = 1200 tk

For earning 5% profit, selling price should be = (1200*105)/100 = 1260 tk (Ans).

সমন্বিত ৫ ব্যাংক || অফিসার (ক্যাশ) (11-03-2022)

A. Tk. 490
B. Tk. 510
C. Tk. 500
D. Tk. 510
E. None of these

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Answer: Option C

Explanation:

983 . A person makes a profit of 10% on 25% of the quantity and a loss of 20% on the rest. What is the percentage gain or loss on the whole?

A. 10%
B. 12.5%
C. -12%
D. 25%
E. None of these

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Answer: Option B

Explanation:

Suppose cost price  =  100 Tk.
Gain on 25Tk  =  2.50 Tk  =  Selling price  =  25   +  2.50  =  27.50 TK 
Loss on 75 Tk  =  15 Tk Selling price  =  75  -  15  =  60 Tk 
Total selling price  =  60   +   27.50  =  87.50 
Loss  =  100  -  87.50  =  12.50

984 . A person spends 20 percent of his monthly salary for his son's education.In the coming mondi,he is expected to get an increment of Tk.170 and he plans to spend half of that increment also for his son's education.The total he would spend then for his son's education would be Tk.645.What is the percent salary of that person?

A. 2800
B. 3200
C. 3600
D. 4200

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Answer: Option A

Explanation:

985 . A person travels a certain distance at 3 km / hr and reaches 15 min late. If he travels at 4 km / hr, he reaches 15 min earlier . The distance he has to travel is __

A. 4.5km
B. 6 km
C. 7.2 km
D. 12 km

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Answer: Option B

Explanation:

Let the time taken to travel at speeds 3 km/h and 4 km/h be t1 and t2 respectively.
So, t1 - t2 = 15 - ( - 15) = 30 minutes = 0.5 h
Now, let the distance travelled be = x km
So, (x / 3) - (x / 4) = 0.5
⇨ x = 6 km.

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

A. 4.5km
B. 6km
C. 7.2km
D. 12km

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Answer: Option B

Explanation:

15+15=30 mins =½ hour

So,

t'-t=1/2

or, d/v'-d/v=1/2

or, d/3-d/4=1/2

or, d=6 km

(ans)

অফিসার (ক্যাশ) নিয়োগ পরীক্ষা- ১২-১০-২০১৮ ||

A. 20
B. 25
C. 45
D. 30
E. None of these

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Answer: Option D

Explanation:

75 km/hr means,

Travelling 75 km takes 60 mins

So, Travelling 25 km takes (60×25)/75=20 mins

As he comes back at twice speed so it takes half time and that is 10 mins

So, minutes in total=20+10=30

(ans)

988 . A person travels from P to Q at a speed of 40 kmph and returns by increasing his speed by 50%. What is the average speed for both the trips?

A. 36 kmph
B. 45 kmph
C. 48 kmph
D. 50 kmph

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Answer: Option D

Explanation:

let, P to Q is x km. Thus he travels 2x km

1st Speed = 40kmph and 2nd speed will be = 40 + 40X50% = 60kmph

Now, time to go P to Q = x/40 and time to come from Q to P is = x/60 and total time taken = x/40 + x/60 = 5x/120 = x/24

Thus, Average speed = 2x/(x/24) = (24X2x)/x = 48kmph

Ans: Average Speed 48km/h

989 . A person was asked to state his age in years. His reply was, 'Take my age three years hence, multiply it by 3 and then subtract three times my age three years ago and you will know how old I am' What was the age of the person ?

A. 18 years
B. 20 years
C. 24 years
D. 32 years

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Answer: Option A

Explanation:

ধরি, লেকটির বয়স x বছর

প্রশ্নমতে লোকটির

বয়স = ( x + 3) × 3 - 3 ( x - 3) বছর

= 3x + 9 - 3x + 9

= 18 বছর

990 . A Petrol tank now is 1/2 full. After you remove 8 gallons petrol from the 1/2 full tank, the tank is then 1/10 full. What is the capacity in gallons of the tank ?

A. 4
B. 3
C. 20
D. 1

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Answer: Option C

Explanation:

প্রধান প্রশাসনিক কর্মকর্তার কার্যালয় ( প্রতিরক্ষা মন্ত্রণালয়) সহকারী পরিচালক ০৫.০৪.২০১৯

976 . A person crosses a 600m long street in 5 minutes. What is his speed in km per hour ?

977 . A person deposited Tk. 400 for 2 years, Tk. 550 for 4 years and Tk. 1200 for 6 years. He received the total simple interest of Tk. 1020. The rate of interest per annum is

978 . A person has Tk. 950 consisting of the notes of Tk. 500, Tk. 100, Tk. 50 and Tk. 10. How many notes should at least be there of Tk. 50?

979 . A person has Tk.950 consisting of the notes of Tk.500, Tk.100, Tk.50 and Tk.10. How many notes should at least be there of Tk.50?

980 . A person has TK. 950 in 29 notes consisting of TK. 500,100, 50 and 10. How many notes should at least be in TK. 50 ?

981 . A person incurs a loss of 5 % by selling a watch for Tk. 1140. At what price should the watch be sold to earn 5% profit?

982 . A person invested 2/3 th of his capital 3%, 1/6th at 6% and the remainder at 12%. If his annual income is Tk. 25, then the capital is

983 . A person makes a profit of 10% on 25% of the quantity and a loss of 20% on the rest. What is the percentage gain or loss on the whole?

985 . A person travels a certain distance at 3 km / hr and reaches 15 min late. If he travels at 4 km / hr, he reaches 15 min earlier . The distance he has to travel is __

986 . A person travels a certain distance at km/hr and reaches 15 min late. If he travels at 4 km/hr, he reaches 15 min earlier. The distance he has to travel is

987 . A person travels a distance of 25 km at a speed of 75 km/hr and then comes back at twice the speed. How many minutes did he take in total?

988 . A person travels from P to Q at a speed of 40 kmph and returns by increasing his speed by 50%. What is the average speed for both the trips?

989 . A person was asked to state his age in years. His reply was, 'Take my age three years hence, multiply it by 3 and then subtract three times my age three years ago and you will know how old I am' What was the age of the person ?

990 . A Petrol tank now is 1/2 full. After you remove 8 gallons petrol from the 1/2 full tank, the tank is then 1/10 full. What is the capacity in gallons of the tank ?

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