45
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:

If the length of a rectangle is increased by 40%, and the breadth is decreased by 20%,then the area of the rectangle increases by x%. Then the value of x is:

 

A) 16 B) 20
C) 8 D) 12
 
Answer & Explanation Answer: D) 12

Explanation:
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0 52
Q:

A shopkeeper marks the price of the article in such a way that after allowing 28% discount, he wants a gain of 12%. If the marked price is ₹224. then the cost price of the article is:

 

A) ₹168 B) ₹144
C) ₹120 D) ₹196
 
Answer & Explanation Answer: B) ₹144

Explanation:
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0 31
Q:

The price of sugar is increased by 17%. A person wants to increase his expenditure by 8% only. By what percent should he decrease his consumption, nearest to one decimal place?

 

A) 7.9% B) 8.1%
C) 8.3% D) 7.7%
 
Answer & Explanation Answer: D) 7.7%

Explanation:
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0 76
Q:

An article is sold for Rs.1,680 after two successive discounts of 20% and 16%. What is the marked price of the article?

 

A) Rs.2,400 B) Rs.2,500
C) Rs.2,200 D) Rs.2,300
 
Answer & Explanation Answer: B) Rs.2,500

Explanation:
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0 57
Q:

The price of sugar is increased by 24%. A person wants to increase his expenditure by 15% only. By what percentage, correct to one decimal place, should he reduce his consumption?

 

A) 7.1 B) 7.3
C) 6.9 D) 7.5
 
Answer & Explanation Answer: B) 7.3

Explanation:
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2 100
Q:

An article is sold for ₹ 612 after successive discounts of 25% and 15%.What is the marked price of the article?

 

A) ₹960 B) ₹940
C) ₹1000 D) ₹980
 
Answer & Explanation Answer: A) ₹960

Explanation:
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1 827
Q:

An article is sold for ₹ 547.40 after successive discounts of 30% and 15%. What is the market price of the article?

 

A) ₹940 B) ₹900
C) ₹920 D) ₹960
 
Answer & Explanation Answer: C) ₹920

Explanation:
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2 904
Q:

The price of sugar is increased by 17%. A person wants to increase his expenditure by 7% only. By what percentage, correct to one decimal place, should he reduce his consumption?

 

A) 8.3% B) 8.1%
C) 8.7% D) 8.5%
 
Answer & Explanation Answer: D) 8.5%

Explanation:
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0 164