2146 . if w is 10% less than x and y is 30% less than z , then wy is what persent less than xz ?

A. 10%
B. 20%
C. 37%
D. 40%

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Answer: Option C

Explanation:

ধরি, x = 100; তাহলে,w= 100-100 এর 10%=100-10=90

আবার, z= 100 ; তাহলে, y= 100-100 এর 30%= 100-30=70

এখানে, wy= 90×70=6300

এবং, xz=100×100=10000

wy,xz এর চেয়ে শতকরা কম হবে= 10000-6300/10000 ×100

= 3700/10000 ×100= 37%

Sonali Bank Ltd. Senior Officer Recruitment 01.06.2018

A. 540,000
B. 576,000
C. 648,000
D. none of these

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Answer: Option C

Explanation:

2148 . If x% of 40 is y then 10x =?

A. 25y
B. 100y
C. 10y
D. 4y

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Answer: Option A

Explanation:

Here, x% of 40 = y

or, x/100 of 40 = y

or, x = y×100/40

or, 10x = 10×y×100/40

or, 10x = 25y

2149 . If x% of y is 10, then what is y ?

A. 10/x
B. 100/x
C. 1000/x
D. x/100

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Answer: Option C

Explanation:

ATQ,

x% of y = 10

or, xy/100 = 10

or, xy = 1000

or, y = 1000/x

ans: 1000/x

2150 . If X% of y is 10, then what is y?

A. 10/x
B. 100/x
C. 1000/x
D. x/100

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Answer: Option C

Explanation:

2151 . IF x(2x+y+z)=x(x+2y+z)=a, than find the value 'a' $i f (x + y + z) \neq 0$ ..

A. $\frac{1}{2}$
B. $\frac{1}{3}$
C. $\frac{1}{4}$
D. $\frac{1}{8}$

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Answer: Option C

Explanation:

\frac{x}{2 x + y + z} = a, \frac{y}{x + 2 y + z} = a, \frac{z}{x + y + 2 z} = a S o, x = 2 a x + a y + a z y = a x + 2 a y + a z z = a x + a y + 2 a z N o w, x + y + z = 2 a x + a y + a z + a x + 2 a y + a y + a x + a y + 2 a z \Rightarrow x + y + z = 4 a x + 4 a y + 4 a z \Rightarrow x + y + z = 4 a (x + y + z) \Rightarrow 4 a = 1 a = \frac{1}{4}

বাংলাদেশ ব্যাংক || সহকারী পরিচালক (AD) (20-10-2023)

2152 . If x+3=x+3, then what is the value of x? ..

A. 3
B. -3
D. $\sqrt{3}$

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Answer: Option C

Explanation:

\sqrt{x + 3} = \sqrt{x} + \sqrt{3} \Rightarrow {(\sqrt{x + 3})}^{2} = {(\sqrt{x} + \sqrt{3})}^{2} [বর্গ করে] \Rightarrow x + 3 = {(\sqrt{x})}^{2} + 2 \sqrt{x} . \sqrt{3} + {(\sqrt{3})}^{2} \Rightarrow x + 3 - x - 3 = 2 \sqrt{x} . \sqrt{3} \Rightarrow 0^{2} = {(2 \sqrt{x} . \sqrt{3})}^{2} [বর্গ করে] \Rightarrow 0 = 4 . x . 3 \Rightarrow x = \frac{0}{12} \Rightarrow x = 0 Answer : 0

DESCO Recruitment Test 2022 | Sub Station Attendant | 17.09.2022

A. 2x+2y =2z
B. x-z=y-z
C. x=z/2
D. x-y=2z

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Answer: Option D

Explanation:

If x=y then y+y=z

So, 2y=z

But in option D, x-y=2z

So, y-y = 2z or, z =0 which is not possible so option D is not true

2154 . If x+y=4 and x-y=3, then x+2y is :

A. 0.5
B. 4.5
C. 3.5
D. 4

View Answer	Favorite Question

Answer: Option B

Explanation:

Here, x + y = 4

And, x - y = 3

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

So, 2x = 7 [by addition]

or, x = 7/2 = 3.5

So, 3.5 + y = 4 [from first equation]

or, y = 4 - 3.5 = 2.5

Then, x + 2y = 3.5 + 2×0.5 = 3.5 + 1 = 4.5

2155 . IF x+y=9 and x-y = 5 the value of 4xy is:

A. 24
B. 36
C. 28
D. 32
E. None of these

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Answer: Option E

Explanation:

Agrani Bank Ltd. Recruitment Test for Senior Officer 12.02.2010

A. 5
B. 6
C. 7
D. 8

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Answer: Option B

Explanation:

X/Y = 2
or, Y = X/2
Now, X + Y = 9
or, X + X/2 = 9
or, 3X/2 = 9
So, X = 9×2/3 = 6

2157 . If x+y=a and x-y=b, then 2xy= ..

A. $\frac{(a^{2} + b^{2})}{2}$
B. $\frac{(a^{2} - b^{2})}{2}$
C. $\frac{(a^{} + b^{})}{2}$
D. $\frac{(a^{} b^{})}{2}$

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Answer: Option B

Explanation:

সমন্বিত ৫ ব্যাংক || অফিসার (ক্যাশ) (11-03-2022)

A. always
B. only if x<0
C. x>9
D. only if x = 0
E. Never

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Answer: Option A

Explanation:

if x+y>4 and x<3 then y>1

to test the statement,

let x=1 then y will be 3.

that means y is always greater than 1

2159 . If x + 1x = 4, then what is the value of xx2 - 3x + 1/

A. 4
B. 3
C. 2
D. 1

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Answer: Option D

Explanation:

Given that,
x + 1/x = 4
(x2+1)/x=4

x2+1=4x

Now,
x/(x2 - 3x + 1)
= x/(x2 + 1 - 3x)
= x/(4x - 3x)
= x/x
= 1

2160 . If x + 2y = 2x + y, then x - y equal to--

B. 2
C. 4
D. 5

View Answer	Favorite Question

Answer: Option A

Explanation:

2146 . if w is 10% less than x and y is 30% less than z , then wy is what persent less than xz ?

2147 . If window received 1/3 of her hushand's estate, and each of her three sons received 1/3 of the balance. If the widow and one of her sons received a total of Tk. 360,000 from the estate, what was the worth of the estate in Tk?

2148 . If x% of 40 is y then 10x =?

2149 . If x% of y is 10, then what is y ?

2150 . If X% of y is 10, then what is y?

2153 . If x+y = z and x = y, then all of the following are true EXCEPT -

2154 . If x+y=4 and x-y=3, then x+2y is :

2155 . IF x+y=9 and x-y = 5 the value of 4xy is:

2156 . If x+y=9 and x/y=2, then x equals to ----

2158 . If x+y>4 and x<3 then y>1 is true

2159 . If x + 1x = 4, then what is the value of xx2 - 3x + 1/

2160 . If x + 2y = 2x + y, then x - y equal to--

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