Question

Please answer in full method of given below question no 5

Answer 1

let the marks scored By Gurdas be = x
so, ramesh scored = x + 15
and leela scored =x - 7
total marks obtained By them = 83
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ACCORDING TO QUESTION
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==>X + X+15 + X -7 = 83
==>3x +15 -7 = 83
==>3x + 8 = 83
==>3x = 83-8
==>3x = 75
==>x = 75/3
==>x = 25
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marks obtained By them:--
ramesh = 25+15 = 40( x+15)
leela = 25-7 =18 ( x-7)
Gurdas = 25 (x)
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VERIFY:--
40+18+25 =83

Answer 2

$\boxed{\huge{\textbf{ANSWER}}}$

Let, Gurdas marks be ‘x’

As given;
Ramesh scored 15 marks more than Gurdas's marks and Leela 7 marks less than Gurdas's marks.

So,
Ramesh marks = ‘x + 15’
Leela marks = ‘x - 7’

According to question;
Total sum of their marks are ‘83’.

So,
(Ramesh's marks) + (Gurdas's marks) + (Leela's marks) = 83
=> (x) + (x + 15) + ( x -7) = 83
=> x + x + 15 + x - 7 = 83
=> 3x + 15 - 7 = 83
=> 3x + 8 = 83
=> 3x = 83 - 8
=> 3x = 75
=> x = 75 ÷ 3
=> x = 25.

Gurdas's marks = x = 25.
Ramesh's marks = x + 15 = 25 + 15 = 40.
Leela's marks= x - 7 = 25 - 7 = 18.

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$\textbf{\underline{CHECKING}}$

According to question;
(Ramesh's marks) + (Gurdas's marks) + (Leela's marks) = 83
=> 25 + 40 + 18 = 83.
=> 65 + 18 = 83.
=> 83 = 83.

Thus, proved.