0
Q:

In an examination, a student scores 4 marks for every correct answer and loses I mark for every wrong answer. If he attempts in all 60 questions and secures 130 marks, the number of questions he attempts correctly, is:

A) 35 B) 38
C) 40 D) 42

Answer:   B) 38

Explanation:

Let the number of correct answers be X.

Number of incorrect answers = (60 – X).

{\color{Blue} \therefore } 4x – (60 – x) = 130

=> 5x = 190  => x = 38

Q:

Simplify the following equation.

A) 43/19 B) 1
C) 38/19 D) None of these
 
Answer & Explanation Answer: D) None of these

Explanation:

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20 1517
Q:

Simplify  

A) 6 B) 8
C) 10 D) 12
 
Answer & Explanation Answer: C) 10

Explanation:

Apply 

Hence the answer is 1.5+4.7+3.8=10

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13 990
Q:

A) 4 B) 8
C) 16 D) 32
 
Answer & Explanation Answer: C) 16

Explanation:

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5 1126
Q:

A) 16 B) 17
C) 18 D) 19
 
Answer & Explanation Answer: D) 19

Explanation:

   

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4 897
Q:

38% of 7500 +  ?% of 375 = 50% of 6000

A) 50 B) 40
C) 60 D) 45
 
Answer & Explanation Answer: B) 40

Explanation:

  

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6 1244