Percentage- Aptitude Questions and Answers - in Hindi

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Two students appeared for an examination. One of them secured 10 marks more than the other and his marks were 75% of the sum of their marks. The marks obtained by them are ?


दो छात्र एक परीक्षा के लिए उपस्थित हुए। उनमें से एक ने दूसरे की तुलना में 10 अंक अधिक हासिल किए और उसके अंक उन दोनों के अंकों के योग का 75% थे। उन दोनों के द्वारा प्राप्त अंक हैं ?

A)

52 and 42


B)

68 and 58


C)

63 and 53


D)

15 and 5



Correct Answer :

15 and 5


Explanation :

Let, the marks of first students be x Then marks of second students be (x + 10)
According to the questions (x + 10) = 75/100(x + x + 10)

x + 10 = 3/4 (2x + 10)
x + 10 = 3/2 (x + 5)
2x + 20 = 3x + 15
x = 5 and x + 10 = 15

A certain company has 120 employees who are engineers. Here, engineers constitute 30% of its work force. How many people are employed in the company?


एक कंपनी में 120 कर्मचारी हैं जो इंजीनियर हैं। यहां, इंजीनियर के 30% कार्यबल का गठन होता हैं। कंपनी में कितने लोग कार्यरत हैं?

A)

500


B)

400


C)

300


D)

200



Correct Answer :

400


Explanation :

Let the number of employee = X

30% of X = 120
(30/100)*X = 120
So, number of employee in company= X= 400

23% of a bucket full of diluted milk was water. If the quantity of pure milk in the bucket was 15.4 liter, then the capacity of the bucket was ?

A)
20 liter

B)
22 liter

C)
20.9 liter

D)
19.8 liter


Correct Answer :

20 liter


Explanation :

capacity of the bucket = X
water in the bucket = 23% of X = 23*X /100

pure milk in bucket = X - 23*X/100 = 15.4
=> 100*X - 23*X = 15.4 *100
=> 77*X = 1540
=> X = 20 liter

If x is 15% of y and y is 40% of z, then x+y is what % of z ?

A)
6

B)
21

C)
46

D)
55


Correct Answer :

46


Explanation :

Let z= 100

So, y is 40% of z = 40
x is 15% of y = 6

x+y= 46 that is 46% of z

In 2004, a new shirt costs Rs 250, while in 2005 it will cost Rs 400. Calculate by how much percent has the cost of the shirt increased from 2004 to 2005?


2004 में, एक नई शर्ट का मूल्य 250 रुपए है, जबकि 2005 में इसका मूल्य 400 रुपए हो गया। 2004 से 2005 के दौरान शर्ट के मूल्य में कितने प्रतिशत वृद्धि हुई है?

A)

40%


B)

55%


C)

60%


D)

90%



Correct Answer :

60%


Explanation :

As Given,
Cost in 2004 = Rs 250
Cost in 2005 = Rs 400

Increase in Cost from 2004 to 2005 = Rs 400 - Rs 250 = Rs 150
Percentage increase in price = (150/250) * 100 = 60%

%increase in the price of shirt from 2004 to 2005 = 60%

X sells his goods 20% cheaper than Y and 20% dearer than Z. How many % is Z's goods cheaper/dearer than Y's?


X अपनी वस्तुओं को Y की तुलना में 20% सस्ती और Z की तुलना में 20% महंगी बेचता है। Z की वस्तुओं का मूल्य Y की वस्तुओं के मूल्य की तुलना में कितने % सस्ता अथवा महंगा है?

A)

33.33%


B)

40%


C)

42.5%


D)

50%



Correct Answer :

33.33%


Explanation :

Let SX, SY & SZ are selling prices of goods of X, B & C respectively
As Given,
X sells 20% cheaper cheaper than Y, SX = (1 - 20/100)*SY
SX/SY = 80/100 = 4/5
X sells his goods 20% dearer than Z, SX = (1 + 20/100)*SZ
SX/SZ = 120/100 = 12/10

SX/SY = 4/5 =4*3/5*3 = 12/15 ..(1a)
SX/SZ = 12/10 ..(1b)

From (1b) & (1a),
SX ∶ SY ∶ SZ → 12 ∶ 15 ∶ 10

SZ < SY, Z is cheaper than Y
Required percentage = {(SY - SZ)/SY} * 100
= {(15 - 10)/15} * 100
= 33.33%

Therefore Z is 33.33% cheaper than Y.

In an examination, 36% of the students failed in English and 40% failed in Hindi. If 20% of the students failed in both subjects, then the pass percentage is?


एक परीक्षा में 36% छात्र अंग्रेजी में अनुत्तीर्ण रहे और 40% छात्र हिंदी में अनुत्तीर्ण रहे। यदि 20% छात्र दोनों विषयों में अनुत्तीर्ण हैं, तो उत्तीर्ण प्रतिशत ज्ञात कीजिए।

A)

40%


B)

42%


C)

44%


D)

46%



Correct Answer :

44%


Explanation :

As given,
36% of the students failed in English, F(E) = 36
40% failed in Hindi, F(H) = 40.
20% of the students failed in both subjects, F(E ∩ H) = 20.


number of student who failed
F(E ∪ H) = F(E) + F(H) - F(E ∩ H)
=36 + 40 - 20
=56

number of student who pass in both Subjects are
P(E ∪ H) = 100 - F(E ∪ H)
=100 - 56
=44

Hence the pass percentage is 44%

20% of a quantity is Rs 400, the quantity equals?


कितने रुपये का 20%, 400 रुपये के बराबर होगा?

A)

Rs. 200


B)

Rs. 800


C)

Rs. 2000


D)

Rs. 8000



Correct Answer :

Rs. 2000


Explanation :

Let the quantity be Q.
20% × Q = 400
⇒ (20/100) × Q = 400
⇒ (1/5) × Q = 400
⇒ Q = 5 × 400
⇒ Q = 2000
The quantity is Rs 2000

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