Question

7. In an examination, a student scored altogether
135 marks in Bengali and English, 150 marks
in English and Mathematics and 165 marks in
Bengali and Mathematics. Find his marks in
each subject.​

Answer 1

Answer:

The student scored 67.5 in Bengali and English *Each

The student scored 75 mar

ks in Bengali and English *Each

The student scored 82.5 in Bengali and maths *Each

Step-by-step explanation:

You could easily divide any number By 2 so that the Marks for each subject

Answer 2

Answer:

Marks in Bengali 75, in English 60 ,in maths 90.

Step-by-step explanation:

let marks in Bengali be x in English be y and in maths be z .

So, acc. to que.

x+y= 135 -i

y+z= 150 -ii

x+z = 165. -iii

subtracting EQ. i from ii.

y+z-x-y = 150-135

z-x =15

z= 15+x

substituting value of z in EQ. iii

x+15+x= 165

2x= 165-15

2x= 150

x= 75

So, y= 60 and z= 90