1006 . A rectangle area of 16 meters by 12 meters. is surrounded by a road of 3 meters wide. The area of the road is:

A. 78
B. 132
C. 204
D. 216

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Answer: Option C

Explanation:

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Area of the rectangle without the road = 16×12 = 192 sq. m.

Length with road on both side = 16 + 2×3 = 22 m.

Width with road on both side = 12 + 2×3 = 18 m.

Area of the rectangle including the road = 22×18 = 396 sq. m.

Area of the road = 396 - 192 = 204 sq. m.

1007 . A rectangle is 14 cm long and 10 cm wide. If the length is reduced by x cms and its width is increased also x cms so as to make it a square, then its area changes by:

A. 4
B. 144
C. 12
D. 2

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Answer: Option A

Explanation:

Let's call the new length of the rectangle "L" after reducing the length by x cm and increasing the width by x cm. Then, the new width of the rectangle would be "W".

We know that the original length of the rectangle was 14 cm and the original width was 10 cm, so we can write the following equations:

L = 14 - x
W = 10 + x

To make the rectangle into a square, the length and the width must be equal, so we can set L = W:

14 - x = 10 + x
24 = 20
x = 2

Now that we know x = 2, we can use that to find the new length and width of the rectangle:

L = 14 - 2 = 12
W = 10 + 2 = 12

The area of the original rectangle was 14 cm * 10 cm = 140 sq cm. The area of the new square is 12 cm * 12 cm = 144 sq cm. The difference between the two is 144 - 140 = 4 sq cm.

So, the area changes by 4 sq cm when the rectangle is transformed into a square.

1008 . A rectangle is 14 cm long and 10 cm wide . If the length is reduced by x cms and its width is increased also by x cms so as to make it a square, then its area changes by :

A. 4
B. 144
C. 12
D. 2
E. None of these

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Answer: Option A

Explanation:

Area = 14 × 10 = 140 sq.cm

New length = ( 14 - x)

New width = ( 10 + x)

14 - x = 10 + x

2x = 4

x = 2

New Area = ( 14 - 2) × ( 10 + 2) = 144

change is area = ( 144 - 140) sq.cm = 4 sq.cm

Bangladesh Bank - Assistant Director - 2009

A. 300 square feet
B. 180 square feet
C. 108 square feet
D. 64.8 square feet

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Answer: Option B

Explanation:

Area of the carpet = 9 x 12 = 108 sq ft

60% of the floor = 108 sq ft

So, total or 100% floor area = 108 x 100 / 60 = 180 sq ft

1010 . A rectangular fish tank 25m by 9m has water in it to a level of 2m . This water is carefully poured into a cylindrical container with a diameter of 10m . How high will the water reach in the cylindrical container?

A. 18π
B. 18/π
C. π/18
D. 9/2π

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Answer: Option B

Explanation:

ধরি, Cylindrical container এর উচ্চতা h মিটার

এবং, ব্যাসার্ধ r = 10/2 মিটার = 5 মিটার

π(5)2 × h = 25 × 9 × 2

h = 25 × 9 × 2 /25π

h = 18/π

Three Combined Bank Recruitment - Senior Officer 03 .08.2018 ||

A. Tk. 160
B. Tk. 240
C. Tk. 480
D. None of these

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Answer: Option A

Explanation:

Number of carpets required to cover the entire floor = total floor area/ area of carpet = 10x8 /2x2 = 20
Total cost of carpet squares = 20 x 12x(2/3) = Tk. 160

সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. $40
B. $500
C. $100
D. $480

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Answer: Option B

Explanation:

area of rectangular room = 8*5 = 40 square meter

So, the carpet cost = 40×$12.50 = $500 (Ans)

1013 . A rectangular tank 10 inch by 8 inch by 4 inch is filled with water. If all of the water is to be transferred to cube-shaped tanks, each one 3 inches on a side, how many of these smaller tanks are needed?

A. 9
B. 12
C. 16
D. 21

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Answer: Option B

Explanation:

Volume of the rectangular tank = 10×8×4 = 320 in3

Volume of a smaller tank = 33 = 27 in3

Number of smaller tanks needed = 320/27 ≈ 12

1014 . A red house is built from red bricks . A blue house is built from blue bricks. A white house is built from white bricks. Then what is a greenhouse made from ?

A. green bricks
B. wood
C. glass
D. steel

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Answer: Option C

Explanation:

Bangladesh Bank - Assistant Director - 2009

A. 5200
B. 5000
C. 6000
D. 5400

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Answer: Option B

Explanation:

1016 . A reduction of 21% in the price of wheat enables a person to buy 10.5 kg more for Tk.100. What is the reduced price per kg?

A. 2.30
B. 2.50
C. 2
D. 2.25

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Answer: Option C

Explanation:

1017 . A restaurant makes 0% profit after selling a set menu at a discount of 20%. What is the percentage increase of marked price?

A. 30%
B. 20%
C. 40%
D. 50%

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Answer: Option D

Explanation:

1018 . A restaurant meal costs Tk. 35.50 and there was no tax. If the tip was more than 10 percent but less than 15 percent of the cost of meal, then the total amount paid must have been between --

A. Tk. 40 and Tk. 42
B. Tk. 39 and Tk. 41
C. Tk. 38 and Tk. 40
D. Tk. 37 and Tk. 39

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Answer: Option B

Explanation:

11 is the least and 14 is the highest tip percentage of 10

So, 35.50+(11% of 35.50)=39.4

and, 35.50+(14% of 35.50)=40.4

Both are between 39 and 41

(ans).

1019 . A restaurant meal costs Tk. 35.50 and there was no tax. If the tip was more than 10 percent but less than 15 percent of the cost of the meal, then the total amount paid must have been between ---

A. Tk. 40 & Tk. 42
B. Tk. 39 & Tk. 41
C. Tk. 33 & Tk. 40
D. Tk. 37 & Tk. 39
E. None of these

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Answer: Option B

Explanation:

let, Tip = t

Min = 35.50*1.10 = 39.05

Max = 35.50*1.15 = 40.825

39.05 < t < 40.825

so,the total amount paid must have been between Tk.39 & Tk.41 (ans)

1020 . A retail buyer purchase 15 white dress shirts for Tk. 1000 and 5 striped dress shirts Tk. 400. At what average price the retailer should sell a dress shirt if he wants to make a proftit of Tk. 50 each shirt?

A. 110
B. 100
C. 125
D. 150
E. 120

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Answer: Option E

Explanation:

Total cost = 1000 + 400 = Tk.1400

Total shirts = 15 + 5 = 20

Total profit = 20 × 50 = Tk. 1000

Total selling price = 1400 + 1000 = Tk. 2400

Price = 2400/20 = Tk.120

Agrani Bank Ltd. Recruitment Test for Senior Officer 12.02.2010

1006 . A rectangle area of 16 meters by 12 meters. is surrounded by a road of 3 meters wide. The area of the road is:

1007 . A rectangle is 14 cm long and 10 cm wide. If the length is reduced by x cms and its width is increased also x cms so as to make it a square, then its area changes by:

1008 . A rectangle is 14 cm long and 10 cm wide . If the length is reduced by x cms and its width is increased also by x cms so as to make it a square, then its area changes by :

1009 . A rectangular carpet, that is 9 feet by 12 feet, covers 60% of a rectangular floor. What is the area of the floor?

1010 . A rectangular fish tank 25m by 9m has water in it to a level of 2m . This water is carefully poured into a cylindrical container with a diameter of 10m . How high will the water reach in the cylindrical container?

1011 . A rectangular floor that measures 8 metres by 10 metres is to be covered with carpet squares that each measures 2 metres by 2 metres. If a carpet square costs Tk. 12, calculator the total cost cover 2/3 of the floor?

1012 . A rectangular room that is 8 meters by 5 meters is to be carpeted using carpet costing $12.50 per spare meter

1013 . A rectangular tank 10 inch by 8 inch by 4 inch is filled with water. If all of the water is to be transferred to cube-shaped tanks, each one 3 inches on a side, how many of these smaller tanks are needed?

1014 . A red house is built from red bricks . A blue house is built from blue bricks. A white house is built from white bricks. Then what is a greenhouse made from ?

1015 . A reduction of 12.5% in the price of dining table bought down its price to Tk.4375. The original price (in Taka) of the table was:

1016 . A reduction of 21% in the price of wheat enables a person to buy 10.5 kg more for Tk.100. What is the reduced price per kg?

1017 . A restaurant makes 0% profit after selling a set menu at a discount of 20%. What is the percentage increase of marked price?

1018 . A restaurant meal costs Tk. 35.50 and there was no tax. If the tip was more than 10 percent but less than 15 percent of the cost of meal, then the total amount paid must have been between --

1019 . A restaurant meal costs Tk. 35.50 and there was no tax. If the tip was more than 10 percent but less than 15 percent of the cost of the meal, then the total amount paid must have been between ---

1020 . A retail buyer purchase 15 white dress shirts for Tk. 1000 and 5 striped dress shirts Tk. 400. At what average price the retailer should sell a dress shirt if he wants to make a proftit of Tk. 50 each shirt?

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