46 . A bakery opened yesterday with its daily supply of 40 dozen rolls. Half of the rools were sold by noon and 80% of the remaining rolls were sold between noon and closing time. How many dozen rolls had not been sold when the bakery closed yesterday?

A. 2 dozen
B. 4 dozen
C. 5 dozen
D. 8 dozen

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Answer: Option B

Explanation:

47 . A ball and a bat costs 110 taka. The bat costs 100 taka more than the ball. How much does the ball cost ?

A. 5
B. 10
C. 15
D. 100

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Answer: Option A

Explanation:

Assit. Programmer | Sonali Bank- Rubali Bank- BD Krishi Bank - 16.11.2018

A. 36
B. 48
C. 24
D. 31

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Answer: Option A

Explanation:

Average of 12 innings = x
According to the question:
(12x + 96)/13 = x + 5
x = 96 - 65 = 31.
Average in 13 innings = 31 + 5 = 36 Ans: A .

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

A. 17 mph
B. 15 mph
C. 12mph
D. 9 mph
E. 4 mph

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Answer: Option B

Explanation:

We know,

60 minutes = 1 hour

Or, 1 minutes = 1/60 hour

Or, 180 minutes = 180/60 hour

= 3 hours

Here, Times (t) = 3 hours;

Distance (s) = 45 miles

And Velocity (v) = ? Mph

Again, we know that,

S = vt

= > v = s/t

= > v = (45÷3) mph

= > v = 15 mph

Bangladesh Bank - Assistant Director - 2013 ||

A. 2 hrs
B. 4hrs
C. 4 hrs
D. 9 hrs

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Answer: Option B

Explanation:

Speed downstream = (10 + 3) km/hr = 13 km/hr
Time taken to travel 52 km downstream = 52/13 hours = 4 hours

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

A. Tk.3333.33
B. Tk.6666.67
C. Tk.5555.56
D. Tk.4444.44
E. None of these

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Answer: Option A

Explanation:

Their sales exceeded the basic quota of TK 200000 by 400000, 250000 and 100000 respectively.

So, Mr. Saif will receive a bonus amount = {100000/(400000 + 250000 + 100000)}x25000 = 3333.33 TK.

52 . A book is originally price at BDT 900, but marked down by 30%. Again when the actual sales occurs a discount of 10% is offered on the marked price, what is the final sales price in BDT?

A. 360
B. 540
C. 500
D. 486
E. None of these

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Answer: Option A

Explanation:

At 30% discount, marked down price = 70% of 900 = 630 BDT.

Another 10% discount on marked price = 10% of 900 = 90 BDT

Final sale = 630 - 90 = 540 BDT.

53 . A box contains 5 pink , 5 green and 2 yellow balls, Three balls are picked up randomly. What is the probability that none of the ball drawn is green

A. 3/4
B. 2/8
C. 4/3
D. 2/3

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Answer: Option D

Explanation:

5 টি pimk, 3 টি green ও 2 টি yellow সহ মোট বলের সংখ্যা 10 টি।

নির্বিআারে 3 টি বল তোলা বলটি green না হওয়ার সম্ভাবনা = (5 + 2) C3 / 10C3 = 7C3/10 C3

= ( 7! / 3! 4!) / ( 10! / 3! 7!)

= 7!/ 3! 4! × 3! 7!/10!

= 7 × 6 × 5 / 10 × 9 × 8

= 7/24

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

A. 125 gm
B. 50 gm
C. 100 gm
D. 250 gm
E. None

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Answer: Option E

Explanation:

55 . A car goes 15 miles on a gallon of octen when it is driven at 50 miles per hour. When the car is driven at 60 miles per hour, it only goes 80% as far. How many gallons of octane is needed to travel 200 mile if half the distance is traveled at 50 miles per hour and the rest at 60 miles per hour?

A. 13.33
B. 16.67
C. 10.6
D. 15
E. None of these

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Answer: Option D

Explanation:

A car goes 15 km with a gallon of octane at 50 km/hr.

Again,

If travels with 60 km/hr, it goes 80% far as that of before. i.e.

D = 80%×15 = 12 km.

Now,

According to question, if 100 km is travelled in 50 km/hr and another 100 km in 60 km/hr then,

In 50 km/hr: 1 gallon = 15 km

In 60 km/hr: 1 gallon = 12 km

Hence,

Total required gallons of octane is;

100/15 + 100/12

= 15 gallons.

56 . A car uses 1 liter of petrol to travel 17 miles. After a tune-up, the car travels 17% farther on one liters. How many liters ( best approximation ) of petrol will it take for the car to travel 170 miles after a tune-up ?

A. 8.1
B. 7.9
C. 9.3
D. 9.1
E. 8.5

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Answer: Option E

Explanation:

After tune - up, the car travels (117% of 17 miles ≈ 20 miles) in one litre petrol.

Therefore, petrol required for 170 miles = 170/20 = 8.5 litre.

Bangladesh Bank - Assistant Director - 2011

A. 15
B. 18
C. 21
D. 25

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Answer: Option A

Explanation:

Let's break down the information provided:

During the promotion, a customer can buy x donuts for the regular price of Tk. 15 and get 3 donuts free.
The donut price per dozen during the promotion is Tk 2 less than the normal donut price per dozen.
Let's denote the normal price per dozen as "P" (in Tk).

So, during the promotion:

Price for x donuts (including 3 free donuts) = Tk. 15
Price per dozen during the promotion = P - 2 Tk
Now, let's set up the equation for the price of x donuts during the promotion:

(x + 3) * (P - 2) = 15

Now, we need to find the value of x. We know that P is the price per dozen during the normal period.

To solve for x, we'll first express P in terms of x:

P = (15 / (x + 3)) + 2

Now, we need to find a value of x for which P is a multiple of 5 (to make the total price of x donuts equal to Tk. 15). We'll try different values of x:

If x = 15: P = (15 / (15 + 3)) + 2 = 1 + 2 = 3 The total price for 15 donuts (including 3 free) at Tk. 3 per dozen would be Tk. 15.
So, the value of x is indeed 15, and this satisfies the condition of the promotion.

Therefore, x = 15.

সিজিডিএফ | অডিটর 21-01-2022

A. 7,000
B. 24,000
C. 40,000
D. 168,000

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Answer: Option D

Explanation:

7 days consist of = 24*7 hours = 168 hours.

Since every hour the machine produces 1000 units of product P,

the total product during 168 hours is = 1000 x 168 = 168,000.

সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 251.2 cubic ft
B. 1,256 cubic ft
C. 5,024 cubic ft
D. 3,140 cubic ft
E. 4,410 cubic ft

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Answer: Option B

Explanation:

Volume of cylinder = πr2h

Volume of circular pool = π × ( 20/2)2 × 4 = 1256.64 ft3

Bangladesh Bank - Assistant Director - 2011

A. 3 feet
B. 5 feet
C. 6 feet
D. 4 feet
E. None of them

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Answer: Option A

Explanation:

Of the 3 sides, two of them are mentioned first which is 3 and 4 and the water is at 5 ft. When it is on another two sides, we now see that the other side itself is 5 ft. So, all the water is full in the tank. Only way the water can rise is upto rest side, which is 3 ft.

Bangladesh Bank - Assistant Director - 2012

46 . A bakery opened yesterday with its daily supply of 40 dozen rolls. Half of the rools were sold by noon and 80% of the remaining rolls were sold between noon and closing time. How many dozen rolls had not been sold when the bakery closed yesterday?

47 . A ball and a bat costs 110 taka. The bat costs 100 taka more than the ball. How much does the ball cost ?

48 . A batsman has a certain average of runs for 12 innings. In the 13th inning, he scores 96 runs thereby increasing his average by 5 runs. what is his average after the 13 innings ?

49 . A biker rode 45 miles in 180 minutes. What ws his speed (mph) during this ride ?

50 . A boat travel with a speed of 10 km / hr in still water. If the speed of the stream is 3 km / hr then find time taken by boat to travel 52 km downstream .

51 . A bonus of Tk.25000 will be distributed among three salespersons in proportion of the amounts by which there sales exceed the basic quota of Tk.200000. Mrs. Asha sold Tk.600000. Mr. Bashir sold Tk.450000 and Mr. Saif sold Tk,300000. How much did Mr. Saif receive from this bonus?

52 . A book is originally price at BDT 900, but marked down by 30%. Again when the actual sales occurs a discount of 10% is offered on the marked price, what is the final sales price in BDT?

53 . A box contains 5 pink , 5 green and 2 yellow balls, Three balls are picked up randomly. What is the probability that none of the ball drawn is green

54 . A cake weighting 750 gram has three ingredients: flour, sugar and fruits. There is twice as much as flour as sugar and one and a half times as much as sugar as fruits. What is the quantity of sugar(in grams) in the cake?

55 . A car goes 15 miles on a gallon of octen when it is driven at 50 miles per hour. When the car is driven at 60 miles per hour, it only goes 80% as far. How many gallons of octane is needed to travel 200 mile if half the distance is traveled at 50 miles per hour and the rest at 60 miles per hour?

56 . A car uses 1 liter of petrol to travel 17 miles. After a tune-up, the car travels 17% farther on one liters. How many liters ( best approximation ) of petrol will it take for the car to travel 170 miles after a tune-up ?

57 . A certain bakery ran a promoion: a customer can but x donuts for the regular price of Tk.15 total and get 3 donuts free. If the donut price per dozen during the promotion is Tk 2 less than the normal donut price per dozen, what is the value of x?

58 . A certain machine produces 1,000 units of product P per hour. Working contineously at this constant rate, this machine will produce how many units of product P in 7 days?

59 . A circular pool is filling with water . Assuming the water level will be 4ft deep and the diameter is 20 ft , what is the approximate volume of the water needed to fill the pool ?

60 . A closed rectangular tank contains a certain amount of water. When the tank is placed on its 3 ft by 4 ft side, the height of the water in the tank is 5 ft . Wen the tank is placed on another side of dimensions 4 ft by 5 ft , what is the height, in feet,

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