1651 . If 16(4a) = 1, find the value of a.

A. -2
C. 1/2
D. 3

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Answer: Option A

Explanation:

16(4a)=1

or, 4a=1/16

or, 4a=4-2

or, a=-2

1652 . If 18 identical machines required 40 days to complete a job, how many fewer days would have been required to do the job if 6 additional machines of the same type had been used from the beginning?

A. 10
B. 13.33
C. 16
D. 26.66

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Answer: Option A

Explanation:

18 machines complete a job in 40 days

So, 18 + 6 = 24 machines complete the job in 40 x 18 / 24 = 30 days

Number of days saved = 40 - 30 = 10 days

1653 . If 194 means AID, BEFF means what?

A. 2254
B. 2256
C. 2846
D. None of these

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Answer: Option D

Explanation:

Hints: AID = 194 ; যেখানে A = 1, I = 9 এবং D = 4 সুতরাং BEEF = 2566 ; যেখানে B = 2, E = 5, এবং F = 6। উল্লেখিত অপশনে সঠিক উত্তর নাই

1654 . If 2 < x < 4 and 3 < y < 7, what is the largest integer value of x + y?

A. 9
B. 10
C. 7
D. 8

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Answer: Option B

Explanation:

x is less than 4 and y is less than 7. That means that if only the value of x+y is restricted to being an integer, x could be 3.5 and y could be 6.5, and so x+y=10. Since x+y cannot be 11, 10 is the largest integral value.

1655 . If 2 kg of metal, of which 1/3 is zinc and the rest is copper s, be mixed with 3 kg of metal , of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?

A. 13 : 42
B. 19 : 43
C. 15 : 42
D. 17 : 43

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Answer: Option D

Explanation:

In 1st metal,

Zinc = 2×(1/3) = 2/3

Copper = 2×(2/3) = (4/3)

In 2nd metal,

Zinc = 3×(1/4) = (3/4)

Copper = 3×(3/4) = (9/4)

New ratio , Zinc : Copper = {(2/3) + (3/4)} :{(4/3) + (9/4)}

= {(8 + 9)/12}:{(16 + 27)/12}

= (17/12):(43/12)

= 17:43 (Ans)

Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯

A. 17 : 43
B. 13 : 42
C. 19 : 43
D. 15 : 42

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Answer: Option A

Explanation:

In 1st metal,

Zinc = 2×(1/3) = 2/3

Copper = 2×(2/3) = (4/3)

In 2nd metal,

Zinc = 3×(1/4) = (3/4)

Copper = 3×(3/4) = (9/4)

New ratio , Zinc : Copper = {(2/3) + (3/4)} :{(4/3) + (9/4)}

= {(8 + 9)/12}:{(16 + 27)/12}

= (17/12):(43/12)

= 17:43 (Ans)

1657 . If 2 men or 3 women or 4 boys can do a piece of work in 52 days, then the same piece of work will be done by 1 man . 1 woman and 1 boy in -

A. 48 days
B. 36 days
C. 45 days
D. 50 days

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Answer: Option A

Explanation:

in one day 1 man do, (1/2) (1/52) work

1 woman do (1/3)(1/52) work

1 boy do (1/4) (1/52) work

three do 1/52 (1/2 + 1/3 + 1/4) work.

(1/52)(26/24) = 1/48

1 work is done in 48 days

ans: 48 days

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

A. Tk. 500
B. Tk. 750
C. Tk. 1000
D. Tk. 15000

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Answer: Option C

Explanation:

Let table cost x tk

A.Q.T

2x + 3y = 3500….(1)

3x+ 2y = 4000……(2)

( 2)* 3-(1)*2

We get x= 1000

1659 . If 2/3 of the number of women attending a certain dance is equal to 1/2 the number of men attending, what fraction of thoes attending are women?

A. 5/7
B. 3/4
C. 2/5
D. 3/7

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Answer: Option D

Explanation:

1660 . If 20% of 200 equals 5.5% of 'x', what is the value of 'x' ?

A. 2000
B. 1205
C. 2100
D. 1220
E. None of these

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Answer: Option E

Explanation:

1661 . If 200000 taka is invested at 10% per year and it is deposited for 2 years then what is the total money?

A. 200000
B. 240000
C. 40000
D. 245000

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Answer: Option B

Explanation:

1662 . If 21215120 represents 'bloat ' then 6121135 represents

A. voice
B. bald
C. flame
D. castle

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Answer: Option C

Explanation:

এখানে, b = 2, l = 12, o = 15, a = 1, t = 20
সুতরাং, 6 = f, 12 = l, 1 = a, 13 = m, 5 = e
⸫6121135 represents the word flame.

Assistant Director (General) 06.07.18

A. 55
B. 100
C. 550
D. 1,000

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Answer: Option D

Explanation:

Here, 5.5% of w = 25% of 220

or, 5.5/100 of w = 25/100 of 220

or, w = (25/100)×220×(100/5.5) = 1000

1664 . If 2994÷14.5=172, then 29.94÷1.45=?

A. 0.172
B. 1.72
C. 17.2
D. 172
E. 172

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Answer: Option C

Explanation:

1665 . If 2A = 3B = 4C, Than, A : B : C is.

A. 2 : 3 : 4
B. 4 : 3 : 2
C. 6 : 4 : 3
D. 20 : 15 : 2

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Answer: Option C

Explanation:

1651 . If 16(4a) = 1, find the value of a.

1652 . If 18 identical machines required 40 days to complete a job, how many fewer days would have been required to do the job if 6 additional machines of the same type had been used from the beginning?

1653 . If 194 means AID, BEFF means what?

1654 . If 2 < x < 4 and 3 < y < 7, what is the largest integer value of x + y?

1655 . If 2 kg of metal, of which 1/3 is zinc and the rest is copper s, be mixed with 3 kg of metal , of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?

1656 . If 2 kg of metal, of which 1/3 is zine and the rest is copper , be mixed with 3 kg of metal, of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?

1657 . If 2 men or 3 women or 4 boys can do a piece of work in 52 days, then the same piece of work will be done by 1 man . 1 woman and 1 boy in -

1658 . If 2 tables and 3 chairs cost Tk. 3500 and 3 tables and 2 chairs cost Tk. 4000, then how much does table cost?

1659 . If 2/3 of the number of women attending a certain dance is equal to 1/2 the number of men attending, what fraction of thoes attending are women?

1660 . If 20% of 200 equals 5.5% of 'x', what is the value of 'x' ?

1661 . If 200000 taka is invested at 10% per year and it is deposited for 2 years then what is the total money?

1662 . If 21215120 represents 'bloat ' then 6121135 represents

1663 . If 25% of 220 equals 5.5% of w, then what is w?

1664 . If 2994÷14.5=172, then 29.94÷1.45=?

1665 . If 2A = 3B = 4C, Than, A : B : C is.

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