706 . A : B = 4 : 5, A : C = 10 : 9 then A : B : = ?

A. 4 : 5 : 9
B. 4 : 5 : 10
C. 8 : 9 : 10
D. 20 : 25 : 18
E. None of them

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Answer: Option D

Explanation:

A:B = 4:5

A:C = 10:9

A:B = (4 x 5) : (5 x 5) = 20:25

A:C = (10X2): (9X2) = 20:18

A:B:C = 20:25:18

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

A. 660
B. 720
C. 160
D. 726

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Answer: Option D

Explanation:

708 . A and B are in the ratio of 5: 4 and B and C are in the ratio of 3: 2. What is the ratio of A: C?

A. 15:8
B. 16:17
C. 18:20
D. 17:18

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Answer: Option A

Explanation:

Here, A: B5:4

B:C=3:2

So, A: C = 15: 8 (Ans)

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

A. 25
B. 9
C. 12
D. 10
E. 15

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Answer: Option D

Explanation:

A + B can do the work in 12 days.

In a single day A + B will do 1/12 th portion of the work.

B + C can do the work in 15 days.

In a single day B + C will do 1/15 th portion of the work.

A + C can do the work in 20 days.

In a single day A + C will do 1/20 th portion of the work.

In a day (A + B) + (A + C) + (C + A) will do = (1/12) + (1/15) + (1/20) portion of the work.

2(A + B + C) = (1/12) + (1/15) + (1/20) = 1/5 portion of the work.

Then, (A + B + C) will do = 1/10 portion of the work in a day

A + B + C will complete the work in 10 days.

Sonali- Janata &amp- Agrani Bank Offier (Cash Recruitment) 22.02.2008

A. 4 days
B. 6 days
C. 8 days
D. 12 days

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Answer: Option C

Explanation:

(A + B) 1 days work = 1/8

(B + C) 1days work = 1/12

(A + B + C) 1days work = 1/6

(A + C) 1 days work = (2×1/6) - (1/8 + 1/12) = (1/3 - 5/24) = 3/24 = 1/8

So, A and C together will do the work in 8 days

711 . A and B go cycling in the same direction with speeds of 6 km /hr and 12 km/hr. A car from behind passes them in 9 and 10 seconds respectively . What is the speeds of the car?

A. 22 km/hr
B. 33 km/hr
C. 66 km/hr
D. 44 km/hr

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Answer: Option C

Explanation:

জনতা ও রূপালী ব্যাংক- অফিসার ১৩.১২.২০১৯

A. Tk. 1425
B. Tk. 1500
C. Tk. 1537.50
D. Tk. 1576

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Answer: Option B

Explanation:

Let, A and B
invest in a business 3x
and 2x
ATQ, 3x = 855
বা, x = 855/3
বা, x = 285
5 % of the total profit
= 3x + 2x
= 5x = 5×285=1425
95% of the total profit
= 1425/95× 100
= 1500

পূবালী ব্যাংক লিমিটেড || জুনিয়র অফিসার (30-09-2023) || 2023

A. Tk. 1425
B. Tk. 1537.50
C. Tk. 1500
D. Tk. 1576

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Answer: Option C

Explanation:

Hints: Let the total profit be Tk. 100

After paying to charity A share = Tk. ( 95× 3/5) = Tk. 57

If A share is tk 57, total profit = tk.100

If A share Tk. 855 total profit = (100/57 × 855) = 1500

714 . A and B invest in a business in the ratio 3 : 2. If 5% of the total profit goes to charity and A's share is Tk. 855, the total profit is :

A. Tk. 1500
B. Tk. 1425
C. Tk. 1537
D. Tk. 1576

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Answer: Option A

Explanation:

Hints : Profit of A = 3 × Total profit × .95/3 + 2

855 = 3 × Total profit × .95 /5

Total profit = 1500

715 . A and B invested in a business in the ratio of 3:2. If 5% of the total profit goes to charity and A's share is TK.855, then how much is the total profit?

A. TK. 1425
B. TK. 1500
C. TK. 1537.50
D. TK. 1576
E. None of these

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Answer: Option B

Explanation:

Let the total profit be Tk. 100.
After paying to charity, A's share = (95*3/5) = Tk. 57.
If A's share is Tk. 57, total profit = Tk. 100.
If A's share is Tk. 855, total profit = (100/57*855) = 1500.

716 . A and B started a partership business investing some amount in the ratio of 3:5. C joined them after six months with an amount equal to that of B. In what proportion should the profit at the end of the first year be distributed amoung A, B and C?

A. 3:5:2
B. 3:5:5
C. 6:10:5
D. Cannot be determined
E. None of these

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Answer: Option C

Explanation:

Let the initial investments of A and B be 3x and 5x A : B : C = (3x × 12) : ( 5x × 12) : ( 5x × 6) = 36 : 60 : 30 = 6 : 10 : 5

717 . A and B together can complete a piece of work in 12 days, B and C can do it in 20 days and C and A can do it in 15days. A, B and C together can complete it in:

A. 12 days
B. 6 days
C. 8 days
D. 10 days

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Answer: Option D

Explanation:

A & B can do in 1 day = 1/12 work
B & C can do in 1 day = 1/20 work
C & A can do in 1 day = 1/15 work
2(A&B&C) can do in 1 day = 1/12 + 1/20 + 1/15 = 12/60 = 1/5 work.
A&B&C can do in 1 day = 1/(5 × 2) = 1/10 work.
Required number of days = 1/(1/10) = 10 days. Ans: D.

অফিসার (ক্যাশ) নিয়োগ পরীক্ষা- ১২-১০-২০১৮ ||

A. 60 days
B. 80 days
C. 70 days
D. 90 days

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Answer: Option B

Explanation:

Basic bank recruitment 2018; auditor 26.01.2018 || Image 2018

A. 0.2
B. 7.5
C. 5.0
D. 6.4
E. None of these

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Answer: Option B

Explanation:

A and B together in 1 day can paint 1/3 of the wall

A alone in 1 day can paint 1/5 of the wall

Then, B alone can paint (1/3 - 1/5 = 2/15) of the wall in 1 day

So, B alone can paint the wall in 15/2 = 7.5 days

720 . A and B together can paint a wall in 3 days. A can do it alone in 5 days. How many days would it take B to do this job alone?

A. 0.5
B. 7.5
C. 5.0
D. 6.4

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Answer: Option B

Explanation:

A and B together in 1 day can paint 1/3 of the wall

A alone in 1 day can paint 1/5 of the wall

Then, B alone can paint (1/3 - 1/5 = 2/15) of the wall in 1 day

So, B alone can paint the wall in 15/2 = 7.5 days

706 . A : B = 4 : 5, A : C = 10 : 9 then A : B : = ?

707 . A amn deposits Tk.600 in a Bank at 10% interest rate compounded annuaally. At the end of the second year, the total amount including interest will become Tk--

708 . A and B are in the ratio of 5: 4 and B and C are in the ratio of 3: 2. What is the ratio of A: C?

709 . A and B can do a work in 12 days. B and C can do it is 15 days, and A and C can do it in 20 days. If all of them work together, in how many days they can finish the work?

710 . A and B can work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in :

711 . A and B go cycling in the same direction with speeds of 6 km /hr and 12 km/hr. A car from behind passes them in 9 and 10 seconds respectively . What is the speeds of the car?

712 . A and B invest in a business in a ratio of 3 : 2. If 5% of the total profit goes to charity. A's share is Tk. 855, the total profit is:

713 . A and B invest in a business in ratio 3:2. If 5% of the total profit goes to charity and A's share is Tk 855, the total profit is.

714 . A and B invest in a business in the ratio 3 : 2. If 5% of the total profit goes to charity and A's share is Tk. 855, the total profit is :

715 . A and B invested in a business in the ratio of 3:2. If 5% of the total profit goes to charity and A's share is TK.855, then how much is the total profit?

716 . A and B started a partership business investing some amount in the ratio of 3:5. C joined them after six months with an amount equal to that of B. In what proportion should the profit at the end of the first year be distributed amoung A, B and C?

717 . A and B together can complete a piece of work in 12 days, B and C can do it in 20 days and C and A can do it in 15days. A, B and C together can complete it in:

718 . A and B together can do a piece of work in 40 days. A having worked for 20 days, B finishes the remaining work alone in 60 days shall B finish the whole work alone?

719 . A and B together can paint a wall in 3 days . A can do it alone in 5 days . How many days would it take B to do this job alone ?

720 . A and B together can paint a wall in 3 days. A can do it alone in 5 days. How many days would it take B to do this job alone?

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