811 . A garden of 100 m length and 60 m width has a walkway of 2m width on every side. what is the area of the garden , in square meter, excluding the walkway?

A. 5684
B. 6000
C. 5376
D. 5123

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Answer: Option C

Explanation:

রাস্তাবাদে বাগানের দৈর্ঘ= ১০০-(২+২)=৯৬ মিটার

রাস্তাবাদে বাগানের প্রস্থ= ৬০-(২+২)= ৫৬ মিটার

অতএব, রাস্তাবাদে বাগানের ক্ষেত্রফল= ৯৬×৫৬= ৫৩৭৬ ব.মি

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A. 5376
B. 5576
C. 2556
D. 7874

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Answer: Option A

Explanation:

To find the area of the garden, excluding the walkway, you can subtract the area of the walkway from the total area of the garden.

The garden's total length is 100 meters, and it has a walkway of 2 meters on each side. So, the effective length of the garden is 100 meters - 2 meters (on one side) - 2 meters (on the other side) = 96 meters.

Similarly, the garden's total width is 60 meters, and it has a walkway of 2 meters on each side. So, the effective width of the garden is 60 meters - 2 meters (on one side) - 2 meters (on the other side) = 56 meters.

Now, calculate the area of the garden:

Area = Length × Width Area = 96 meters × 56 meters Area = 5376 square meters

So, the area of the garden, excluding the walkway, is 5376 square meters. The correct answer is 5376.

813 . A garden of 100 meter length and 60 meter width has a walkway of 2 meter width on every side . What is the area of the garden, in square meters , excluding the walkway ?

A. 5684
B. 6000
C. 624
D. 5376

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Answer: Option D

Explanation:

Area of the garden including walkway = ( 100 * 60 ) = 6, 000 sq.m

Area of garden excluding walkway = ( 100 - 4 ) *( 60 - 4 ) = 96 * 56 = 5376.

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A. 135
B. 140
C. 145
D. 115

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Answer: Option B

Explanation:

Hints:

3/7 - 1/5 = ( 15 - 7)/35 = 8/35

8/35 অংশের জন্য দরকার 32 gallons

1 অংশের জন্য দরকার = ( 32 × 35) /8 = 140 gallons.

815 . A gerden is 60m long and 20m wide. Inside the garden there is a 5m wide path around it.The area of the path is in square meter.

A. 700
B. 650
C. 375
D. 500

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Answer: Option D

Explanation:

Area including path = 60 x 20 = 1200 sq. m.

Length without path = 60 - (5x2) = 50 m

Width without path = 20 - (5x2) = 10 m

Area without path = 50 x 10 = 500 sq. m.

Area of the path = 1200 - 500 = 700 sq. m.

816 . A glass was filled with 10 liters of water and 0.01 liter of water evaporated every day during a 20-day period. What percent of the original amount of water evaporated during this period?

A. 20%
B. 22%
C. 2.2%
D. 2%

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Answer: Option D

Explanation:

Total water evaporated = 0.01×20 = 0.2 liter

Percentage of evaporated water = 0.2 / 10 × 100% = 2%

817 . A glass when full of milk, weighs one kg. When half full it weighs 3/4 kg; what is the weight of the empty glass?

A. .45 kg
B. 1 kg
C. 0.25 kg
D. 0.5 kg

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Answer: Option D

Explanation:

Weight of 1/2 glass of milk = 1 - 3/4 = 1/4 kg

So, weight of full glass of milk = 2 × 1/4 = 1/2 kg

So, weight of the glass = 1 - 1/2 = 1/2 kg = 0.5 kg

818 . A goat is tied to one corner of a square plot of side 12m by a rope 7m long. Find the area it can graze?

A. 19.25 sq.m
B. 155 sq.m
C. 144 sq.m
D. 38.48 sq.m

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Answer: Option D

Explanation:

819 . A group of students decided to collect as many paisa from each from each member of a group as is th number of members. If the total collection amounts to Tk 59.29 , what is the m=number of members in the group?

A. 57
B. 67
C. 77
D. 87
E. None of these

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Answer: Option C

Explanation:

Money collected = ( 59.29 ×100) paisa = 5929 paisa

No of numbers = root(5929) = 77

820 . A hall, 20m long and 15 m broad , is surrounded by a veranda of uniform width of 2.5m. The cost of flooring the verandah at TK. 3.50 per square meter is -

A. Tk. 500
B. TK. 700
C. Tk. 600
D. Tk. 800

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Answer: Option B

Explanation:

821 . A hat contains 12 cards marked with a star and 18 unmarked cards. What is the probability that one card slelected at random will be marked with a star?

A. 3/5
B. 2/5
C. 2/3
D. 5/2

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Answer: Option B

Explanation:

Total cards=12+18

=30

Star marked card probability=12/30

=2/5 (Ans)

822 . A hawker buy every 4 oranges at Tk. 25 and then sells every 8 oranges at Tk. 56. What is the percentage of the profit?

A. 12%
B. 9%
C. 7.5%
D. 5.25%

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Answer: Option A

Explanation:

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A. 22.25 min
B. 37.5 min
C. 40 min
D. 65 min
E. None of these

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Answer: Option C

Explanation:

First hawker takes 1.25 hours or 75 minutes and second hawker takes 75 + 15 = 90 minutes.

Together they can finish (1/75 + 1/90) = 11/450 part of the delivery in 1 minute.

So, together they will finish the whole delivery in 1/(11/450) = 450/11 = 40.91 minutes.

824 . A house-owner was having his house painted. He was advised that he would require 25 kg of paint. Allowing for 15% wastage and assuming that the paint is available in 2 kg cans. What would be the cost of paint purchased, if one can cost Tk.16?

A. 160
B. 360
C. 240
D. 180

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Answer: Option C

Explanation:

825 . A is 3 years older than B and 3 years younger than C. B and D are twins. How older is C than D?

A. 2 years
B. 3 years
C. 6 years
D. 12 years
E. None of these

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Answer: Option C

Explanation:

যেহেতু A,B অপেক্ষা 3 বছরের বড় এবং C অপেক্ষা 3 বছরের ছোট আবার B এবং D হচ্ছে যমজ। তাই C এর বয়স D অপেক্ষা 3 + 3 = 6 বছর বেশি।

811 . A garden of 100 m length and 60 m width has a walkway of 2m width on every side. what is the area of the garden , in square meter, excluding the walkway?

812 . A garden of 100 meter length and 60 meter width has a walkway of 2 meter width on every side. What is the area of the garden, in square meters, excluding the walking?

813 . A garden of 100 meter length and 60 meter width has a walkway of 2 meter width on every side . What is the area of the garden, in square meters , excluding the walkway ?

814 . A gas tank is 1/5 th full and requries 32 gallons more to make it 3/7 th full. What is the capacity of the tank?

815 . A gerden is 60m long and 20m wide. Inside the garden there is a 5m wide path around it.The area of the path is in square meter.

816 . A glass was filled with 10 liters of water and 0.01 liter of water evaporated every day during a 20-day period. What percent of the original amount of water evaporated during this period?

817 . A glass when full of milk, weighs one kg. When half full it weighs 3/4 kg; what is the weight of the empty glass?

818 . A goat is tied to one corner of a square plot of side 12m by a rope 7m long. Find the area it can graze?

819 . A group of students decided to collect as many paisa from each from each member of a group as is th number of members. If the total collection amounts to Tk 59.29 , what is the m=number of members in the group?

820 . A hall, 20m long and 15 m broad , is surrounded by a veranda of uniform width of 2.5m. The cost of flooring the verandah at TK. 3.50 per square meter is -

821 . A hat contains 12 cards marked with a star and 18 unmarked cards. What is the probability that one card slelected at random will be marked with a star?

822 . A hawker buy every 4 oranges at Tk. 25 and then sells every 8 oranges at Tk. 56. What is the percentage of the profit?

823 . A hawker takes 1.25 hours to deliver newspapers on his route. Another hawker takes 15 minutes longer to deliver these papers on the same route. How long would it take to deliver the papers if both of them worked together?

824 . A house-owner was having his house painted. He was advised that he would require 25 kg of paint. Allowing for 15% wastage and assuming that the paint is available in 2 kg cans. What would be the cost of paint purchased, if one can cost Tk.16?

825 . A is 3 years older than B and 3 years younger than C. B and D are twins. How older is C than D?

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