Question

P, Q and R secured 45%, 50% and 60% marks respectively in 6. M’s marks in 6 is 12.5 more than P’s marks and 4 less than R’s marks. Find out the individual marks of four students.



A. For the students, total marks obtained for 6 is 311.5.
B. Total of M’s and P’s marks in 6 is 147.5.
C. R has obtained 84 marks.
A) Only C
B) Only A & B
C) All are required
D) None of the statements is required

Answer 1

Q:

P, Q and R secured 45%, 50% and 60% marks respectively in Biology. M’s marks in Biology is 12.5 more than P’s marks and 4 less than R’s marks. Find out the individual marks of four students.
 
A. For the students, total marks obtained for Biology is 311.5.
B. Total of M’s and P’s marks in Biology is 147.5.
C. R has obtained 84 marks.

A) Only C
B) Only A & B
C) All are required
D) None of the statements is required

Answer:   D) None of the statements is required 

Explanation:

From the given data, 
(60 - 45)% = 12.5 + 4
15% = 16.5
=> 100% = ?
100% = 16.5 x 100/15 = 110

Hence, P = 45% of 110 = 45x110/100 = 49.5 
Q = 50% of 110 = 55
R = 60% of 110 = 60 x 110/100 = 66
M = 12.5 + 49.5 = 62 or 66 - 4 = 62
 
Hence, no statement is required to answer.

Answer 2

$\huge{Answer}$

Given:

$(60 - 45)\% = 12.5 + 4$

$15\% = 16.5$

$100\% =?$

Now,

$100\% = \frac{16.5 \times 100}{15} = 110$

Hence,

P$= 45\% \: of \: 110= \frac{45 \times 110}{100} = 49.5$

Q $= 50\% \: of \: 110 = \frac{50\times 110}{100} = 55$

R $= 60\% \: of \: 110 = \frac{60 \times 110}{100} = 66$

M $= 12.5 + 49.5 = 62$

Hence,

No statement is required to answer.

Therefore,

Correct option D) None of the statements is required.

$\huge{Be \:Brainly}$