1411 . Aunik, Kamal and Jamal invested TK. 8000, TK. 4000 and TK. 8000 respectively in a business . Aunik left after six months. If after eight months, there was a gain of TK. 4005, then what will be the share of Kamal?

A. TK. 890
B. TK. 1335
C. TK. 1602
D. TK. 1780

View Answer	Favorite Question

Answer: Option A

Explanation:

Aunik's share=8000×6=48000 [as he left after 6 months]
Kamal's share=4000×8=32000
Jamal's share=8000×8=64000

Ratio = 48000 : 32000 : 64000
= 48 : 32 : 64
= 3 : 2 : 4

Total = 3+2+4 = 9
Total profit = 4005

∴ Kamal's profit = (2÷9) X 4005 = Tk. 890 (Ans:)

Bangladesh Bank - Assistant Director - 2016

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

1412 . Aunik and Anam started a business investing Tk. 22,500 and Tk. 35,000 respectively. Out of a total profit of Tk. 13,800, Anam's share is :

A. Tk. 5400
B. Tk. 7200
C. Tk. 8400
D. Tk. 9600

View Answer	Favorite Question

Answer: Option C

Explanation:

Anam's share = 35000 / ( 22500 + 35000) × 13800 = 8400tk.

1413 . Average age of three brothers is 16 years . Average age of these brothers along with their father is 25 years. What is the age of their father ?

A. 42
B. 52
C. 41
D. 45

View Answer	Favorite Question

Answer: Option B

Explanation:

Total age of the three brothers = 3 x 16 = 48 years

Total age of the brothers along with their father = 4 x 25 = 100

So, age of the father = 100 - 48 = 52 years

1414 . Average mark in Math in a class of 40 students is 45. Average mark of all the 30 boys is 50. Then the average mark obtained by the girls is :

A. 30
B. 35
C. 25
D. 40

View Answer	Favorite Question

Answer: Option A

Explanation:

No. of students = 40

No. of Boys = 30

No. of Girls = 10

Average of 40 stuents = 45

Total of students = 45 *40 = 1800

Aerage of 30 students = 50

Total of 30 = 30 * 50 = 1500

Total of 10 girls = 1800 - 1500 = 300

Average mark of 10 girls = 300/10 = 30

Bangladesh Bank - Assistant Director - 2010

A. 4
B. 6
C. 8
D. 10

View Answer	Favorite Question

Answer: Option A

Explanation:

here,let, the consecutive even numbers are = n,n + 2,n + 4,n + 6,n + 8

here, (n + n + 2 + n + 4 + n + 6 + n + 8)/5 = 8

or,5n + 20 = 40

or,5n = 20

or,n = 4

so, the smallest of the numbers is 4

ans: 4

1416 . Average of P numbers is x and average of N numbers is y. Find the average of all of the numbers.

A. (Px + Ny)/(p + N)
B. (Px + Ny)/xy(P + N)
C. x + y
D. (x + y)/(P + N)

View Answer	Favorite Question

Answer: Option A

Explanation:

1417 . Average of ten positive numbers is x. If each number increases by 10%, then x-

A. remains unchanged
B. may increase or decrease
C. will increase
D. is increased by 10%

View Answer	Favorite Question

Answer: Option D

Explanation:

Let 10 numbers be x1, x2, x3, . . . . . . . x10
According to question average of these 10 numbers is 10
$$ \Rightarrow \frac{{ {x1 + x2 + x3 + .... + x10} }}{{10}} = x$$
Now if each number is increased by 10%,
then new average, say y.
$$y = \frac{{ {1.1x1 + 1.1x2 + 1.1x3 + .... + 1.1x10} }}{{10}}$$
$${\kern 1pt} \Rightarrow y = 1.1 \times {\frac{{ {x1 + x2 + x3 + .... + x10} }}{{10}}} $$
$$\eqalign{ & \Rightarrow y = 1.1x \cr & \Rightarrow y\,{\text{is }}10\% \,{\text{increased}} \cr} $$.

সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || অফিসার (জেনারেল) (08-03-2024)

A. 4
B. 3
C. 5
D. 6

View Answer	Favorite Question

Answer: Option A

Explanation:

পাঁচটি constant even number ধরি, n, n + 2, n + 4, n + 6, n + 8

যোগফলকে 5 দিয়ে ভাগ করলে average পাওয়া যায় n + 4

তাহলে, n + 4 = 8 বা n = 4

1419 . Average of the five consecutive even numbers is 8. Which is the smallest of the 5 numbers?

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

View Answer	Favorite Question

Answer: Option A

Explanation:

here,let, the consecutive even numbers are = n,n + 2,n + 4,n + 6,n + 8

here, (n + n + 2 + n + 4 + n + 6 + n + 8)/5 = 8

or,5n + 20 = 40

or,5n = 20

or,n = 4

so, the smallest of the numbers is 4

ans: 4

Sonali- Janata- Agrani &amp- Rupali Bank Ltd. Senior Officer Recruitment 14.03.2008

A. 126
B. 122
C. 118
D. 120

View Answer	Favorite Question

Answer: Option A

Explanation:

1421 . B = 3 : 4 এবং B : C = 6 : 5 হলে, A : C = কত?

A. 3 : 5
B. 9 : 10
C. 10 : 9
D. 4 : 9

View Answer	Favorite Question

Answer: Option B

Explanation:

A:B=3:4=3*3:4*3=9:12

B:C=6:5=6*2:5*2=12:10

A:B:C=9:12:10

A:C=9:10(ans)

1422 . Babu's income is Tk.1000 more than that of Selim. Their total salary is Tk.x. What is Selim's salary?

A. x/2 - 500
B. (x + 1000)/2
C. (2x - 500)/2
D. 2x - 1000

View Answer	Favorite Question

Answer: Option A

Explanation:

1423 . Babul attended five tests during the semester and the average of his test scores was 87. If has average score after first three tests were 85, what was the average of his 4th and 5th test?

A. 88
B. 89
C. 90
D. 93
E. None of these

View Answer	Favorite Question

Answer: Option C

Explanation:

Total of five test scores = 5 x 87 = 435

Total of first three test scores = 3 x 85 = 255

Total of last two test scores = 435 - 255 = 180

Therefore, averaage of 4th & 5th test scores = 180/2 = 90.

1424 . Baki lives 2 miles west of Raju's house. Rafiq lives 3 mniles north of Raju's house and 2 miles west of Diba's house. What is the straight-line distance from Bakis's house to Diba's house?

A. 5 miles
B. 6 miles
C. 7 miles
D. 10 miles
E. None of these

View Answer	Favorite Question

Answer: Option A

Explanation:

From pithagorous theorem,

Distance = root (4)² + (3)² = 5 miles

1425 . Bangladeshi supporters in a stadium double every match. In the eighth match, there were 48000 supporters which was the full capacity of the stadium. In which match did the Bangladeshi supporter fill up half the capacity of the stadium?

A. 2nd match
B. 4th match
C. 6th match
D. 7th match

View Answer	Favorite Question

Answer: Option D

Explanation:

প্রতিদিন সমর্থক দ্বিগুন হয়।তাই ৮ম দিনে ৪৮০০০ জন থাকলে সপ্তম দিনে সমর্থক ছিল ২৪০০০ জন যা স্টেডিয়ামের ধারণ ক্ষমতার অর্ধেক।

অতএব, সপ্তম দিনে স্টেডিয়ামের ধারণ ক্ষমতার অর্ধেক ছিল।

উত্তর : ৭ম ম্যাচ

Sonali &amp- Janata Bank Ltd. Senior Officer (IT/ICT) 08.06.2018

1411 . Aunik, Kamal and Jamal invested TK. 8000, TK. 4000 and TK. 8000 respectively in a business . Aunik left after six months. If after eight months, there was a gain of TK. 4005, then what will be the share of Kamal?

1412 . Aunik and Anam started a business investing Tk. 22,500 and Tk. 35,000 respectively. Out of a total profit of Tk. 13,800, Anam's share is :

1413 . Average age of three brothers is 16 years . Average age of these brothers along with their father is 25 years. What is the age of their father ?

1414 . Average mark in Math in a class of 40 students is 45. Average mark of all the 30 boys is 50. Then the average mark obtained by the girls is :

1415 . Average of 5 consecutive even numbers is 8, Which is the smallest of the 5 number

1416 . Average of P numbers is x and average of N numbers is y. Find the average of all of the numbers.

1417 . Average of ten positive numbers is x. If each number increases by 10%, then x-

1418 . Average of the five consecutive even number is 8. Which is the smallest of the 5 numbers?

1419 . Average of the five consecutive even numbers is 8. Which is the smallest of the 5 numbers?

1420 . Average weight of 8 persons is 120 lb. One person leaves the group and a new person comes in and the new average is 122 lb. If the weight of the outgoing person is 110 lb, then what is the weight of the incoming person?

1421 . B = 3 : 4 এবং B : C = 6 : 5 হলে, A : C = কত?

1422 . Babu's income is Tk.1000 more than that of Selim. Their total salary is Tk.x. What is Selim's salary?

1423 . Babul attended five tests during the semester and the average of his test scores was 87. If has average score after first three tests were 85, what was the average of his 4th and 5th test?

1424 . Baki lives 2 miles west of Raju's house. Rafiq lives 3 mniles north of Raju's house and 2 miles west of Diba's house. What is the straight-line distance from Bakis's house to Diba's house?

1425 . Bangladeshi supporters in a stadium double every match. In the eighth match, there were 48000 supporters which was the full capacity of the stadium. In which match did the Bangladeshi supporter fill up half the capacity of the stadium?

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