44
Q:

The sum of the number of boys and girls in a school is 150. if the number of boys is x, then the number of girls becomes x% of the total number of students. The number of boys is : 

A) 60 B) 70
C) 80 D) 90

Answer:   A) 60



Explanation:

We have : x + (x% of 150 )= 150 

=> x+(x/100)*150] = 150

=> 52x = 150  

=> x = (150*2)/5 = 60

Q:

The following table shows the number of students enrolled in different faculties in a college.

The percentage of students studying in faculties other than Science is:

 

A) 60% B) 80%
C) 75% D) 20%
 
Answer & Explanation Answer: B) 80%

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0 28
Q:

The price of sugaris increased by 20%. By what percentage must one cut down on the consumption of sugar, so that no extra amount has to be incurred on sugar?

 

A) 1623°° B) 20°°
C) 80°° D) 8313°°
 
Answer & Explanation Answer: A) 1623°°

Explanation:
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1 52
Q:

Anu spends 68% of her monthly income. If her monthly income increases by 20% and her monthly savings increase by 75/8%, then the percentage increase in her monthly expenditure is

A) 20%   B) 25%  
C) 22%   D) 32%  
 
Answer & Explanation Answer: B) 25%  

Explanation:
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0 162
Q:

The population of a city increased by 30% in the first year and decreased by 15% in the next year. If the present population is 11.05 then the population 2 years ago was:

 

A) 10,000 B) 99,500
C) 99,000 D) 10,050
 
Answer & Explanation Answer: A) 10,000

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0 176
Q:

In a school, 4 % of the students did not appear for the annual exams. 10% of the students who appeared for the exams could not pass the exam. Out of the remaining students, 50% got distinction marks and 432 students passed the exam but could not get distinction marks. The total number of students in the school is:

 

A) 1000 B) 1200
C) 960 D) 878
 
Answer & Explanation Answer: A) 1000

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2 287
Q:

A shopkeeper marked a computer table for ₹7,200. He allows a discount of 10% on it and yet makes profit of 8%. What will be his gain percentage if he does NOT allow any discount?

A) 20 % B) 9 %
C) 18 % D) 2 %
 
Answer & Explanation Answer: A) 20 %

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0 1820
Q:

Amir gave two successive discounts of 10% and 20% on a pencil. If the marked price of the pencil is Rs 3200, then what is the total value (in Rs) of the two discounts together?

 

A) 940   B) 1086  
C) 896   D) 1120
 
Answer & Explanation Answer: C) 896  

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1 227
Q:

Rahul’s salary is 50% more than Rohit’s salary. If Rahul saves Rs 2250 which is 8% of his salary, then what is Rohit’s salary (in Rs)?

 

A) 22250   B) 24450  
C) 26350   D) 18750
 
Answer & Explanation Answer: D) 18750

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1 174