The price of an article is first decreased by 40% and then increased by 20%. The net change in the price will be : [#1123]

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Q1. The price of an article is first decreased by 40% and then increased by 20%. The net change in the price will be :
Q1. The price of an article is first decreased by 40% and then increased by 20%. The net change in the price will be :

(A) 20%
(A) 20%

(B) 40%
(B) 40%

(D) 28%
(D) 28%

Answer: (D) 28%
Answer: (D) 28%

Net change (-40 + 20 +

\frac{(- 40) * 20}{100}

)% = (-20 +

\frac{- 800}{100}

)% = (-20 - 8)% = -28% = 28%

Net change (-40 + 20 +

\frac{(- 40) * 20}{100}

)% = (-20 +

\frac{- 800}{100}

)% = (-20 - 8)% = -28% = 28%

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Q1. If $\frac{X}{3} = \frac{Y}{4} = \frac{Z}{7}, t h e n \frac{X + Y + Z}{Z}$ is equal to
Q1. If $\frac{X}{3} = \frac{Y}{4} = \frac{Z}{7}, t h e n \frac{X + Y + Z}{Z}$ is equal to

(A) 2
(A) 2

(B) 3
(B) 3

(D) 5
(D) 5

Answer: (A) 2
Answer: (A) 2

\frac{X}{3} = \frac{Y}{4} = \frac{Z}{7}

Hence, X:Y:Z = 3:4:7

\frac{X + Y + Z}{Z}

\frac{3 + 4 + 7}{7}

\frac{14}{7}

= 2

\frac{X}{3} = \frac{Y}{4} = \frac{Z}{7}

Hence, X:Y:Z = 3:4:7

\frac{X + Y + Z}{Z}

\frac{3 + 4 + 7}{7}

\frac{14}{7}

= 2

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Q2. Two numbers are in the ratio 2 : 3 and the product of their HCF and LCM is 96. The sum of the two numbers is
Q2. Two numbers are in the ratio 2 : 3 and the product of their HCF and LCM is 96. The sum of the two numbers is

(A) 18
(A) 18

(B) 20
(B) 20

(D) 24
(D) 24

Answer: (B) 20
Answer: (B) 20

2:3 = 8:12 N1*N2 = HCF*LCM 8*12 = 96 N1+N2 = 8+12 = 20

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Q3. The sum of first 6 prime numbers is
Q3. The sum of first 6 prime numbers is

(A) 40
(A) 40

(B) 43
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Q4. If the decimal number 34p5 is divisible by 9, then the value of p is
Q4. If the decimal number 34p5 is divisible by 9, then the value of p is

(A) 8
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(B) 7
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(D) 6
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Answer: (D) 6
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34p5 -> 3+4+p+5 = 12+p 12+p = 9k 12+6 = 18 = 9k p = 6

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Q5. The sum of the four consecutive alternate numbers is 64. The smallest number amongst them is
Q5. The sum of the four consecutive alternate numbers is 64. The smallest number amongst them is

(A) 13
(A) 13

(B) 11
(B) 11

(D) 9
(D) 9

Answer: (A) 13
Answer: (A) 13

The smallest number amongst them is 13 => X + (X+2) + (X+4) + (X+6) = 64 => 4X + 12 = 64 => 4X = 64 - 12 => 4X = 52 => X = 13

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Q6. A number was increased by 40% and thereafter decreased by 40%. The net change in the number in percentage is
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(A) 16% increase
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(B) 16% decrease
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(D) No change
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Answer: (B) 16% decrease
Answer: (B) 16% decrease

16% decrease = 40-40-

\frac{40 * 40}{100}

% = -

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% = -16%

16% decrease = 40-40-

\frac{40 * 40}{100}

% = -

\frac{1600}{100}

% = -16%

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Q7. At what percentage of simple interest does an amount of money double in 12 years?
Q7. At what percentage of simple interest does an amount of money double in 12 years?

(A)

9 \frac{1}{2} %

(A)

9 \frac{1}{2} %

(B)

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(B)

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(C)

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8 \frac{1}{3} %

(D)

9 \frac{1}{3} %

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9 \frac{1}{3} %

Answer: (C)

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Answer: (C)

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8 \frac{1}{3} %

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= P * 100%

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Q8. 5 : 27 :: 9 :
Q8. 5 : 27 :: 9 :

Fill the blank.

Fill the blank.

(A) 83
(A) 83

(B) 81
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(D) 18
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5 : (5² + 2) = 5 : 27 Hence 9 : (9² + 2) = 9 : 83

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Q9. The value of $\sqrt[3]{8^{2}}$ is
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(A) 1
(A) 1

(B) 3
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(D) 4
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Answer: (D) 4
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\sqrt[3]{4^{3}}

= 4

\sqrt[3]{8^{2}}

\sqrt[3]{64}

\sqrt[3]{4^{3}}

= 4

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Q10. What is the term for a number that can be divided by 2?
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(A) Prime number
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(B) Odd number
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(D) Fraction
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Answer: (C) Even number
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Q1. The price of an article is first decreased by 40% and then increased by 20%. The net change in the price will be :Q1. The price of an article is first decreased by 40% and then increased by 20%. The net change in the price will be :

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