2881 . The contents of a certain box consist of 9 apples and 27 oranges . How many oranges must be removed from the box so that 70% of the pieces of fruits in the box will be apples ?

A. 3
B. 4
C. 6
D. 8
E. None of these

View Answer	Favorite Question

Answer: Option E

Explanation:

The objective here is that 70% of the fruit in the box should be apples.

Now, there are 6 apples at start and there is no talk of removing any apples, so number of apples should remain 6 and they should constitute 70% of total fruit, so total fruit = 6/0.7 = 12 [approximate]
So we should have 12-6 = 6 oranges.
Right now, there are 27 oranges, so to get to 6 oranges, we should remove 27 - 6 = 21 oranges.

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

2882 . The cost, in taka, of manufacturing x microwaves is 6000+300x taka. The amount received when selling these x microwaves is 700x taka. What is the least number of microwaves that must be manufactured and sold so that net profit is Tk. 2,400?

A. 15
B. 21
C. 19
D. 17

View Answer	Favorite Question

Answer: Option B

Explanation:

700x - 6000 - 300x = 2400

400x = 8400

x = 8400/400

x = 21

2883 . The cost in Taka of manufacturing x microwaves is 6000 + 300x Taka. The amount received when selling these x microwaves is 700x Taka. What is the least number of microwaves that must be manufactured and sold so that the net profit is Taka. 2400?

A. 15
B. 17
C. 21
D. 19

View Answer	Favorite Question

Answer: Option C

Explanation:

700x - 6000 - 300x = 2400

400x = 8400

x = 8400/400

x = 21

2884 . The cost of 2 TV sets and a radio is Tk.7000, While 2 radios and one TV set togather cost Tk.4250. The cost of TV set is--

A. 3250
B. 3500
C. 3000
D. 3375

View Answer	Favorite Question

Answer: Option A

Explanation:

2 x + y = 7000 ....(i)
x + 2y = 4250 .....(ii)
Solving (i) and (ii) we get,
x = 3250
∴ Cost of T.V. set is Rs. 3250.

2885 . The cost of 9 mangoes and 5 apples is equal to the cost of 7 mangoes and 8 apples. Find the ratio between the cost of 1 mango and the cost of one apple.

A. 3 : 2
B. 2 : 3
C. 5 : 8
D. 9 : 7

View Answer	Favorite Question

Answer: Option A

Explanation:

9x+5x=7x+8x

⇒ 2x=3y

⇒x/y=3/2

x:y=3:2.

বাংলাদেশ ব্যাংক || অফিসার (ক্যাশ) (21-07-2023)

A. dolor 125
B. dolor 125
C. dolor 225
D. dolor 335
E. None of them

View Answer	Favorite Question

Answer: Option A

Explanation:

মনে করি, Actual price = 100 tk
20% discount এ বর্তমান মূল্য = (100 - 20) = 80 taka
বর্তমান মূল্য 80 tk হলে Actual price 100 tk

বর্তমান মূল্য 100 tk হলে Actual price 100x100/80 = 125tk

2887 . The cost of carpeting a room 18 m long with a carpet 75 cm wide at Tk. 4.50 per meter is TK. 810. The breadth of the room is:

A. 7 m
B. 8 m
C. 7.5 m
D. 8.5 m

View Answer	Favorite Question

Answer: Option C

Explanation:

2888 . The cost of making x units is Y = 5x + 10, the average cost of making 10 units is--

A. Tk. 5
B. Tk.6
C. Tk.7
D. Tk.8

View Answer	Favorite Question

Answer: Option B

Explanation:

2889 . The cost of picture frame M is Tk.10.00 less than 3 times the cost of picture frame N. If the cost of frame M is Tk.50.00, what is the cost of frame N?

A. Tk.13.33
B. Tk.16.66
C. Tk.20.00
D. Tk.26.66

View Answer	Favorite Question

Answer: Option B

Explanation:

Cost price of N = x

Cost price of M = 3x - 10

3x - 10 = 50

= > 3x = 60

= > x = 60/3

∴x = 20

2890 . The cost of preparing a cricket ground of rectangular shape at 70 paisa per square meter is Tk. 420. Find the perimeter of the field if its sides are in the ratio of 3 : 2.

A. 100m
B. 50m
C. 110m
D. 600m

View Answer	Favorite Question

Answer: Option A

Explanation:

2891 . The cost of renting a small bus for a trip was Taka X which was to be shared equally by 16 persons . Actually 10 persons availed the trip. How much more Taka will be the cost per persons ?

A. X/6
B. X/10
C. 3X/40
D. x/16
E. 3X/80

View Answer	Favorite Question

Answer: Option E

Explanation:

Initial cost per person = X/16

Actual cost per person = x / 10

More = x/10 - x/16 = ( 8x - 5x) / 80 = 3x/80.

Bangladesh Bank - Assistant Director - 2010

A. 52.30%
B. 35.00%
C. 34. 48%
D. 30.00%

View Answer	Favorite Question

Answer: Option C

Explanation:

Let CP of each article be Tk. 29 and SP of each article be Tk. 19
Loss Percentage = (29x−19x) × 100/29x = 34.48%

সমন্বিত ৬ (ব্যাংক) ও ২ টি আর্থিক প্রতিষ্ঠান - সিনিয়র অফিসার ১০.০৬.২০১৯

A. 15%
B. 20%
C. 10%
D. 25%

View Answer	Favorite Question

Answer: Option B

Explanation:

One Bank Ltd || Special Cadre Officer (03-01-2025) || 2025

A. TK. 300 and Tk. 390
B. TK. 390 and TK. 300
C. TK. 480 and TK. 210
D. Tk. 400 and TK. 290

View Answer	Favorite Question

Answer: Option A

Explanation:

ধরি, চেয়ারের ক্রয়মূল্য = x

টেবিলের ক্রয়মূল্য = x + 30% of x

প্রশ্নমতে, x + x + 30% of x = 690

2x + x × 30/100 = 690

200x + 30x = 69000

230x = 69000

x = 300

টেবিলের ক্রয়মূল্য = 300 + 30% of 300 = 300 + 90 = 390 টাকা

2895 . The cube root of 1331 is?

A. 13
B. 11
C. 19
D. 12

View Answer	Favorite Question

Answer: Option B

Explanation:

এখানে, (11)³(11)3 = 1331
অর্থাৎ 1331 এর ঘনমূল = 11

সোনালী ও ডিবিবিএল ব্যাংক- সিনিয়র অফিসার (আইটি) - 16.10.2020 ||

2881 . The contents of a certain box consist of 9 apples and 27 oranges . How many oranges must be removed from the box so that 70% of the pieces of fruits in the box will be apples ?

2882 . The cost, in taka, of manufacturing x microwaves is 6000+300x taka. The amount received when selling these x microwaves is 700x taka. What is the least number of microwaves that must be manufactured and sold so that net profit is Tk. 2,400?

2883 . The cost in Taka of manufacturing x microwaves is 6000 + 300x Taka. The amount received when selling these x microwaves is 700x Taka. What is the least number of microwaves that must be manufactured and sold so that the net profit is Taka. 2400?

2884 . The cost of 2 TV sets and a radio is Tk.7000, While 2 radios and one TV set togather cost Tk.4250. The cost of TV set is--

2885 . The cost of 9 mangoes and 5 apples is equal to the cost of 7 mangoes and 8 apples. Find the ratio between the cost of 1 mango and the cost of one apple.

2886 . The cost of a camera at 20% discount is dolor 100. Find its actual price.

2887 . The cost of carpeting a room 18 m long with a carpet 75 cm wide at Tk. 4.50 per meter is TK. 810. The breadth of the room is:

2888 . The cost of making x units is Y = 5x + 10, the average cost of making 10 units is--

2889 . The cost of picture frame M is Tk.10.00 less than 3 times the cost of picture frame N. If the cost of frame M is Tk.50.00, what is the cost of frame N?

2890 . The cost of preparing a cricket ground of rectangular shape at 70 paisa per square meter is Tk. 420. Find the perimeter of the field if its sides are in the ratio of 3 : 2.

2891 . The cost of renting a small bus for a trip was Taka X which was to be shared equally by 16 persons . Actually 10 persons availed the trip. How much more Taka will be the cost per persons ?

2892 . The cost price of 19 articles is same as the selling price of 29 articles. What is loss percentage?

2893 . The cost price of 6 oranges equals selling price of five. The profit or loss percent in the transaction is:

2894 . The cost price of a table and a chair together is TK. 690. If the table costs 30% more than the chair, then find the cost price of the table and the chair respectively.

2895 . The cube root of 1331 is?

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