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Q:

The average score of boys in an examination in a school is 81 and that of the girls is 83 and the average score of the school is 81.8. Then what will be ratio between the number of girls to the number of boys, in the examination?

A) 3:2 B) 2:3
C) 4:3 D) 3:4
 
Answer & Explanation Answer: B) 2:3

Explanation:

Let the number of boys = b

Let the number of girls = g

From the given data,

 

81b + 83g = 81.8(b + g)

81.8b - 81b = 83g - 81.8g

0.8b = 1.2g

b/g = 1.2/0.8 = 12/8 = 3/2

=> g : b = 2 : 3

 

Hence, ratio between the number of girls to the number of boys = 2 : 3.

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Filed Under: Average
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Q:

Wind and solar energy are examples of

A) Finite energies B) Renewable energies
C) Non renewable energies D) None of the above
 
Answer & Explanation Answer: B) Renewable energies

Explanation:

Wind and solar energy are examples of Renewable energies. 

 

Renewable energy sources are those which can be naturally replenished. 

wind_and_solar_energy_are_examples_of1535692456.jpg image

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Filed Under: Physics
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Q:

Meiosis starts with a single diploid cell and produces 4 haploid cells.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

A cell undergo meiosis, and it produces 4 haploid cells from a single diploid cell.


 


Hence, the given statement is true.

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Subject: Biology
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Q:

Three different containers contain 1365 litres, 1560 litres and 1755 litres of mixtures of milk and water respectively. What biggest measure that can measure all the different quantities exactly ?

A) 37 lit B) 97 lit
C) 129 lit D) 195 lit
 
Answer & Explanation Answer: D) 195 lit

Explanation:

From the given data,

containers contain mixtures of milk and water as 1365 lit, 1560 lit and 1755 lit.

 

Biggest measure that can measure all these different quantities exactly can be given by

HCF of (1365, 1560, 1755) 

That can be found as 

 

HCF of 1365, 1755 = 195

Now, HCF of 195 and 1560 = 195

 

Hence, biggest measure that can measure all the given different quantities exactly is 195 lit.

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Filed Under: HCF and LCM
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Q:

In a class of 80 students and 5 teachers, each student got sweets that are 15% of the total number of students and each teacher got sweets that are 25% of the total number of students. How many sweets were there?

A) 1060 B) 960
C) 860 D) 760
 
Answer & Explanation Answer: A) 1060

Explanation:

From the given data,

80 x 15/100 of 80 + 5 x 80 x 25/100

= 960 + 100

= 1060.

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Filed Under: Percentage
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Q:

When should you stop at green and go at red?

Answer

When you are eating a Watermelon, we eat what is red and stop at green layer.

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Subject: Word Puzzles Exam Prep: TOEFL , GRE , GATE , CAT , Bank Exams , AIEEE
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Q:

Which new European satellite using advanced laser technology to track global winds and improve weather forecasts has been successfully put into orbit on a Vega rocket from French Guyana?

 

A) Radyo 4 B) Aeolus
C) Eutelsat W 2 D) Telstar 12
 
Answer & Explanation Answer: B) Aeolus

Explanation:
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Filed Under: General Science
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Q:

Sairam spent Rs. 38460 on the renovation of his home and Rs. 24468 on buying TV set and remained with 28% of the total amount. What was the total amount?

A) Rs. 87400 B) Rs. 68700
C) Rs. 74000 D) Rs. 94060
 
Answer & Explanation Answer: A) Rs. 87400

Explanation:

Let the total amount he had with = Rs. p

From the given data,

p - 38460 - 24468 = 28p/100

p - 28p/100 = 24468 + 38460

72p/100 = 62928

72p = 62928 x 100

p = 62928 x 100/72

p = 87400

 

Hence, the total amount he had = p = Rs. 87400.

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Filed Under: Percentage
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