Question

Average marks of Rajesh in five subject is 84.if the average marks in four subject is 85.Find the marks second in the fifth subject​

Answer 1

Step-by-step explanation:

Let the subjects be A, B, C, D, E

Average of all subjects is 82

So the total marks scored will be 82×5= 410

Now he scores average of 86.5 in A and B

Total marks scored in A and B is 86.5×2= 173

Also he scores average of 84 in D & E

total marks scored in D& E will be 84× 2= 168

Total marks scored in A, B, D, E is 168+173= 341

Marks in C will be 420–341= 69

Thus the student scores 69 marks in third subject.

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