Percentage- Aptitude Questions and Answers

View in English View in Hindi

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 ?

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?

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

Latest Updates

Fill in the blank

I ________ station before the train arrived.

If I ______ a king, I would help everyone.

Radha___________her daughter for an hour.

Errors Identification

Find out which part of the sentence below has an error and mark the option accourdingly -
Sohan was married in 1990 and have three children.

Find out which part of the sentence below has an error and mark the option accourdingly -
There is no money in the bank in Ram Singh's and Rama's joint account.

Direction

Swapnil start from his home and walked 35 km towards east, after that he turned to his right and walked 20 km. He again turned to his right and walks 35 km. Finally, he turned to his left and walked 20 km and reached his office. How far is his office from his home?

Numbers

How many 2 digit numbers are divisible by 6?

HCF and LCM

Find the smallest square number which is exactly divisible by 3, 5, 15, 18, 20 and 24?

HCF and LCM of two numbers are 82 and 574 respectively. if one of the numbers is 287, find the second number?

Numbers

How many numbers between 1200 to 1500 are multiple of 13?

Find the total number of terms in the series : -3, 1, 5, 9,............., 101 ?

Find the sum of the first 20 terms of the series : 8, -3, 11, -6, 14, -12, 17, -24,....... ?

Series

Find the missing term in the given series - 101, 120, 145, 168, (?), 224

Find the missing term in the given series - 11A13, 17E19, (?), 31O37, 41U43

Find the missing term in the given series - 2,4,8,3,9,27,4,16,(?),5,25,125

Agriculture

Which gas is fixed by Rhizobium bacteria present in the root nodules of a pea plant ?

Chemistry

The formation of sulphurous acid involves ?

The acid present in soft drinks is ?